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dt.h File Reference
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Data Structures

struct  datetkn
 

Macros

#define MAXTZLEN   10
 
#define USE_POSTGRES_DATES   0
 
#define USE_ISO_DATES   1
 
#define USE_SQL_DATES   2
 
#define USE_GERMAN_DATES   3
 
#define INTSTYLE_POSTGRES   0
 
#define INTSTYLE_POSTGRES_VERBOSE   1
 
#define INTSTYLE_SQL_STANDARD   2
 
#define INTSTYLE_ISO_8601   3
 
#define INTERVAL_FULL_RANGE   (0x7FFF)
 
#define INTERVAL_MASK(b)   (1 << (b))
 
#define MAX_INTERVAL_PRECISION   6
 
#define DTERR_BAD_FORMAT   (-1)
 
#define DTERR_FIELD_OVERFLOW   (-2)
 
#define DTERR_MD_FIELD_OVERFLOW   (-3) /* triggers hint about DateStyle */
 
#define DTERR_INTERVAL_OVERFLOW   (-4)
 
#define DTERR_TZDISP_OVERFLOW   (-5)
 
#define DAGO   "ago"
 
#define DCURRENT   "current"
 
#define EPOCH   "epoch"
 
#define INVALID   "invalid"
 
#define EARLY   "-infinity"
 
#define LATE   "infinity"
 
#define NOW   "now"
 
#define TODAY   "today"
 
#define TOMORROW   "tomorrow"
 
#define YESTERDAY   "yesterday"
 
#define ZULU   "zulu"
 
#define DMICROSEC   "usecond"
 
#define DMILLISEC   "msecond"
 
#define DSECOND   "second"
 
#define DMINUTE   "minute"
 
#define DHOUR   "hour"
 
#define DDAY   "day"
 
#define DWEEK   "week"
 
#define DMONTH   "month"
 
#define DQUARTER   "quarter"
 
#define DYEAR   "year"
 
#define DDECADE   "decade"
 
#define DCENTURY   "century"
 
#define DMILLENNIUM   "millennium"
 
#define DA_D   "ad"
 
#define DB_C   "bc"
 
#define DTIMEZONE   "timezone"
 
#define AM   0
 
#define PM   1
 
#define HR24   2
 
#define AD   0
 
#define BC   1
 
#define RESERV   0
 
#define MONTH   1
 
#define YEAR   2
 
#define DAY   3
 
#define JULIAN   4
 
#define TZ   5 /* fixed-offset timezone abbreviation */
 
#define DTZ   6 /* fixed-offset timezone abbrev, DST */
 
#define DYNTZ   7 /* dynamic timezone abbr (unimplemented) */
 
#define IGNORE_DTF   8
 
#define AMPM   9
 
#define HOUR   10
 
#define MINUTE   11
 
#define SECOND   12
 
#define MILLISECOND   13
 
#define MICROSECOND   14
 
#define DOY   15
 
#define DOW   16
 
#define UNITS   17
 
#define ADBC   18
 
#define AGO   19
 
#define ABS_BEFORE   20
 
#define ABS_AFTER   21
 
#define ISODATE   22
 
#define ISOTIME   23
 
#define DTZMOD   28 /* "DST" as a separate word */
 
#define UNKNOWN_FIELD   31
 
#define DTK_NUMBER   0
 
#define DTK_STRING   1
 
#define DTK_DATE   2
 
#define DTK_TIME   3
 
#define DTK_TZ   4
 
#define DTK_AGO   5
 
#define DTK_SPECIAL   6
 
#define DTK_EARLY   9
 
#define DTK_LATE   10
 
#define DTK_EPOCH   11
 
#define DTK_NOW   12
 
#define DTK_YESTERDAY   13
 
#define DTK_TODAY   14
 
#define DTK_TOMORROW   15
 
#define DTK_ZULU   16
 
#define DTK_DELTA   17
 
#define DTK_SECOND   18
 
#define DTK_MINUTE   19
 
#define DTK_HOUR   20
 
#define DTK_DAY   21
 
#define DTK_WEEK   22
 
#define DTK_MONTH   23
 
#define DTK_QUARTER   24
 
#define DTK_YEAR   25
 
#define DTK_DECADE   26
 
#define DTK_CENTURY   27
 
#define DTK_MILLENNIUM   28
 
#define DTK_MILLISEC   29
 
#define DTK_MICROSEC   30
 
#define DTK_JULIAN   31
 
#define DTK_DOW   32
 
#define DTK_DOY   33
 
#define DTK_TZ_HOUR   34
 
#define DTK_TZ_MINUTE   35
 
#define DTK_ISOYEAR   36
 
#define DTK_ISODOW   37
 
#define DTK_M(t)   (0x01 << (t))
 
#define DTK_ALL_SECS_M   (DTK_M(SECOND) | DTK_M(MILLISECOND) | DTK_M(MICROSECOND))
 
#define DTK_DATE_M   (DTK_M(YEAR) | DTK_M(MONTH) | DTK_M(DAY))
 
#define DTK_TIME_M   (DTK_M(HOUR) | DTK_M(MINUTE) | DTK_M(SECOND))
 
#define MAXDATELEN   128
 
#define MAXDATEFIELDS   25
 
#define TOKMAXLEN   10
 
#define FMODULO(t, q, u)
 
#define TMODULO(t, q, u)
 
#define DAYS_PER_YEAR   365.25 /* assumes leap year every four years */
 
#define MONTHS_PER_YEAR   12
 
#define DAYS_PER_MONTH   30 /* assumes exactly 30 days per month */
 
#define HOURS_PER_DAY   24 /* assume no daylight savings time changes */
 
#define SECS_PER_YEAR   (36525 * 864) /* avoid floating-point computation */
 
#define SECS_PER_DAY   86400
 
#define SECS_PER_HOUR   3600
 
#define SECS_PER_MINUTE   60
 
#define MINS_PER_HOUR   60
 
#define USECS_PER_DAY   INT64CONST(86400000000)
 
#define USECS_PER_HOUR   INT64CONST(3600000000)
 
#define USECS_PER_MINUTE   INT64CONST(60000000)
 
#define USECS_PER_SEC   INT64CONST(1000000)
 
#define isleap(y)   (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
 
#define JULIAN_MINYEAR   (-4713)
 
#define JULIAN_MINMONTH   (11)
 
#define JULIAN_MINDAY   (24)
 
#define JULIAN_MAXYEAR   (5874898)
 
#define JULIAN_MAXMONTH   (6)
 
#define JULIAN_MAXDAY   (3)
 
#define IS_VALID_JULIAN(y, m, d)
 
#define MIN_TIMESTAMP   INT64CONST(-211813488000000000)
 
#define END_TIMESTAMP   INT64CONST(9223371331200000000)
 
#define IS_VALID_TIMESTAMP(t)   (MIN_TIMESTAMP <= (t) && (t) < END_TIMESTAMP)
 
#define UTIME_MINYEAR   (1901)
 
#define UTIME_MINMONTH   (12)
 
#define UTIME_MINDAY   (14)
 
#define UTIME_MAXYEAR   (2038)
 
#define UTIME_MAXMONTH   (01)
 
#define UTIME_MAXDAY   (18)
 
#define IS_VALID_UTIME(y, m, d)
 
#define DT_NOBEGIN   (-INT64CONST(0x7fffffffffffffff) - 1)
 
#define DT_NOEND   (INT64CONST(0x7fffffffffffffff))
 
#define TIMESTAMP_NOBEGIN(j)   do {(j) = DT_NOBEGIN;} while (0)
 
#define TIMESTAMP_NOEND(j)   do {(j) = DT_NOEND;} while (0)
 
#define TIMESTAMP_IS_NOBEGIN(j)   ((j) == DT_NOBEGIN)
 
#define TIMESTAMP_IS_NOEND(j)   ((j) == DT_NOEND)
 
#define TIMESTAMP_NOT_FINITE(j)   (TIMESTAMP_IS_NOBEGIN(j) || TIMESTAMP_IS_NOEND(j))
 

Typedefs

typedef int32 fsec_t
 

Functions

int DecodeInterval (char **, int *, int, int *, struct tm *, fsec_t *)
 
int DecodeTime (char *, int *, struct tm *, fsec_t *)
 
void EncodeDateTime (struct tm *tm, fsec_t fsec, bool print_tz, int tz, const char *tzn, int style, char *str, bool EuroDates)
 
void EncodeInterval (struct tm *tm, fsec_t fsec, int style, char *str)
 
int tm2timestamp (struct tm *, fsec_t, int *, timestamp *)
 
int DecodeUnits (int field, char *lowtoken, int *val)
 
bool CheckDateTokenTables (void)
 
void EncodeDateOnly (struct tm *tm, int style, char *str, bool EuroDates)
 
int GetEpochTime (struct tm *)
 
int ParseDateTime (char *, char *, char **, int *, int *, char **)
 
int DecodeDateTime (char **, int *, int, int *, struct tm *, fsec_t *, bool)
 
void j2date (int, int *, int *, int *)
 
void GetCurrentDateTime (struct tm *)
 
int date2j (int, int, int)
 
void TrimTrailingZeros (char *)
 
void dt2time (double, int *, int *, int *, fsec_t *)
 
int PGTYPEStimestamp_defmt_scan (char **str, char *fmt, timestamp *d, int *year, int *month, int *day, int *hour, int *minute, int *second, int *tz)
 

Variables

char * pgtypes_date_weekdays_short []
 
char * pgtypes_date_months []
 
char * months []
 
char * days []
 
const int day_tab [2][13]
 

Macro Definition Documentation

◆ ABS_AFTER

#define ABS_AFTER   21

Definition at line 112 of file dt.h.

◆ ABS_BEFORE

#define ABS_BEFORE   20

Definition at line 111 of file dt.h.

◆ AD

#define AD   0

Definition at line 73 of file dt.h.

◆ ADBC

#define ADBC   18

Definition at line 108 of file dt.h.

◆ AGO

#define AGO   19

Definition at line 110 of file dt.h.

◆ AM

#define AM   0

Definition at line 69 of file dt.h.

◆ AMPM

#define AMPM   9

Definition at line 99 of file dt.h.

◆ BC

#define BC   1

Definition at line 74 of file dt.h.

◆ DA_D

#define DA_D   "ad"

Definition at line 58 of file dt.h.

◆ DAGO

#define DAGO   "ago"

Definition at line 33 of file dt.h.

◆ DAY

#define DAY   3

Definition at line 93 of file dt.h.

◆ DAYS_PER_MONTH

#define DAYS_PER_MONTH   30 /* assumes exactly 30 days per month */

Definition at line 242 of file dt.h.

◆ DAYS_PER_YEAR

#define DAYS_PER_YEAR   365.25 /* assumes leap year every four years */

Definition at line 233 of file dt.h.

◆ DB_C

#define DB_C   "bc"

Definition at line 59 of file dt.h.

◆ DCENTURY

#define DCENTURY   "century"

Definition at line 56 of file dt.h.

◆ DCURRENT

#define DCURRENT   "current"

Definition at line 34 of file dt.h.

◆ DDAY

#define DDAY   "day"

Definition at line 50 of file dt.h.

◆ DDECADE

#define DDECADE   "decade"

Definition at line 55 of file dt.h.

◆ DHOUR

#define DHOUR   "hour"

Definition at line 49 of file dt.h.

◆ DMICROSEC

#define DMICROSEC   "usecond"

Definition at line 45 of file dt.h.

◆ DMILLENNIUM

#define DMILLENNIUM   "millennium"

Definition at line 57 of file dt.h.

◆ DMILLISEC

#define DMILLISEC   "msecond"

Definition at line 46 of file dt.h.

◆ DMINUTE

#define DMINUTE   "minute"

Definition at line 48 of file dt.h.

◆ DMONTH

#define DMONTH   "month"

Definition at line 52 of file dt.h.

◆ DOW

#define DOW   16

Definition at line 106 of file dt.h.

◆ DOY

#define DOY   15

Definition at line 105 of file dt.h.

◆ DQUARTER

#define DQUARTER   "quarter"

Definition at line 53 of file dt.h.

◆ DSECOND

#define DSECOND   "second"

Definition at line 47 of file dt.h.

◆ DT_NOBEGIN

#define DT_NOBEGIN   (-INT64CONST(0x7fffffffffffffff) - 1)

Definition at line 303 of file dt.h.

◆ DT_NOEND

#define DT_NOEND   (INT64CONST(0x7fffffffffffffff))

Definition at line 304 of file dt.h.

◆ DTERR_BAD_FORMAT

#define DTERR_BAD_FORMAT   (-1)

Definition at line 26 of file dt.h.

◆ DTERR_FIELD_OVERFLOW

#define DTERR_FIELD_OVERFLOW   (-2)

Definition at line 27 of file dt.h.

◆ DTERR_INTERVAL_OVERFLOW

#define DTERR_INTERVAL_OVERFLOW   (-4)

Definition at line 29 of file dt.h.

◆ DTERR_MD_FIELD_OVERFLOW

#define DTERR_MD_FIELD_OVERFLOW   (-3) /* triggers hint about DateStyle */

Definition at line 28 of file dt.h.

◆ DTERR_TZDISP_OVERFLOW

#define DTERR_TZDISP_OVERFLOW   (-5)

Definition at line 30 of file dt.h.

◆ DTIMEZONE

#define DTIMEZONE   "timezone"

Definition at line 60 of file dt.h.

◆ DTK_AGO

#define DTK_AGO   5

Definition at line 143 of file dt.h.

◆ DTK_ALL_SECS_M

#define DTK_ALL_SECS_M   (DTK_M(SECOND) | DTK_M(MILLISECOND) | DTK_M(MICROSECOND))

Definition at line 184 of file dt.h.

◆ DTK_CENTURY

#define DTK_CENTURY   27

Definition at line 165 of file dt.h.

◆ DTK_DATE

#define DTK_DATE   2

Definition at line 140 of file dt.h.

◆ DTK_DATE_M

#define DTK_DATE_M   (DTK_M(YEAR) | DTK_M(MONTH) | DTK_M(DAY))

Definition at line 185 of file dt.h.

◆ DTK_DAY

#define DTK_DAY   21

Definition at line 159 of file dt.h.

◆ DTK_DECADE

#define DTK_DECADE   26

Definition at line 164 of file dt.h.

◆ DTK_DELTA

#define DTK_DELTA   17

Definition at line 155 of file dt.h.

◆ DTK_DOW

#define DTK_DOW   32

Definition at line 171 of file dt.h.

◆ DTK_DOY

#define DTK_DOY   33

Definition at line 172 of file dt.h.

◆ DTK_EARLY

#define DTK_EARLY   9

Definition at line 146 of file dt.h.

◆ DTK_EPOCH

#define DTK_EPOCH   11

Definition at line 148 of file dt.h.

◆ DTK_HOUR

#define DTK_HOUR   20

Definition at line 158 of file dt.h.

◆ DTK_ISODOW

#define DTK_ISODOW   37

Definition at line 176 of file dt.h.

◆ DTK_ISOYEAR

#define DTK_ISOYEAR   36

Definition at line 175 of file dt.h.

◆ DTK_JULIAN

#define DTK_JULIAN   31

Definition at line 169 of file dt.h.

◆ DTK_LATE

#define DTK_LATE   10

Definition at line 147 of file dt.h.

◆ DTK_M

#define DTK_M (   t)    (0x01 << (t))

Definition at line 183 of file dt.h.

◆ DTK_MICROSEC

#define DTK_MICROSEC   30

Definition at line 168 of file dt.h.

◆ DTK_MILLENNIUM

#define DTK_MILLENNIUM   28

Definition at line 166 of file dt.h.

◆ DTK_MILLISEC

#define DTK_MILLISEC   29

Definition at line 167 of file dt.h.

◆ DTK_MINUTE

#define DTK_MINUTE   19

Definition at line 157 of file dt.h.

◆ DTK_MONTH

#define DTK_MONTH   23

Definition at line 161 of file dt.h.

◆ DTK_NOW

#define DTK_NOW   12

Definition at line 149 of file dt.h.

◆ DTK_NUMBER

#define DTK_NUMBER   0

Definition at line 137 of file dt.h.

◆ DTK_QUARTER

#define DTK_QUARTER   24

Definition at line 162 of file dt.h.

◆ DTK_SECOND

#define DTK_SECOND   18

Definition at line 156 of file dt.h.

◆ DTK_SPECIAL

#define DTK_SPECIAL   6

Definition at line 145 of file dt.h.

◆ DTK_STRING

#define DTK_STRING   1

Definition at line 138 of file dt.h.

◆ DTK_TIME

#define DTK_TIME   3

Definition at line 141 of file dt.h.

◆ DTK_TIME_M

#define DTK_TIME_M   (DTK_M(HOUR) | DTK_M(MINUTE) | DTK_M(SECOND))

Definition at line 186 of file dt.h.

◆ DTK_TODAY

#define DTK_TODAY   14

Definition at line 151 of file dt.h.

◆ DTK_TOMORROW

#define DTK_TOMORROW   15

Definition at line 152 of file dt.h.

◆ DTK_TZ

#define DTK_TZ   4

Definition at line 142 of file dt.h.

◆ DTK_TZ_HOUR

#define DTK_TZ_HOUR   34

Definition at line 173 of file dt.h.

◆ DTK_TZ_MINUTE

#define DTK_TZ_MINUTE   35

Definition at line 174 of file dt.h.

◆ DTK_WEEK

#define DTK_WEEK   22

Definition at line 160 of file dt.h.

◆ DTK_YEAR

#define DTK_YEAR   25

Definition at line 163 of file dt.h.

◆ DTK_YESTERDAY

#define DTK_YESTERDAY   13

Definition at line 150 of file dt.h.

◆ DTK_ZULU

#define DTK_ZULU   16

Definition at line 153 of file dt.h.

◆ DTZ

#define DTZ   6 /* fixed-offset timezone abbrev, DST */

Definition at line 96 of file dt.h.

◆ DTZMOD

#define DTZMOD   28 /* "DST" as a separate word */

Definition at line 117 of file dt.h.

◆ DWEEK

#define DWEEK   "week"

Definition at line 51 of file dt.h.

◆ DYEAR

#define DYEAR   "year"

Definition at line 54 of file dt.h.

◆ DYNTZ

#define DYNTZ   7 /* dynamic timezone abbr (unimplemented) */

Definition at line 97 of file dt.h.

◆ EARLY

#define EARLY   "-infinity"

Definition at line 37 of file dt.h.

◆ END_TIMESTAMP

#define END_TIMESTAMP   INT64CONST(9223371331200000000)

Definition at line 285 of file dt.h.

◆ EPOCH

#define EPOCH   "epoch"

Definition at line 35 of file dt.h.

◆ FMODULO

#define FMODULO (   t,
  q,
 
)
Value:
do { \
(q) = (((t) < 0) ? ceil((t) / (u)): floor((t) / (u))); \
if ((q) != 0) (t) -= rint((q) * (u)); \
} while(0)
double rint(double x)
Definition: rint.c:21

Definition at line 215 of file dt.h.

◆ HOUR

#define HOUR   10

Definition at line 100 of file dt.h.

◆ HOURS_PER_DAY

#define HOURS_PER_DAY   24 /* assume no daylight savings time changes */

Definition at line 243 of file dt.h.

◆ HR24

#define HR24   2

Definition at line 71 of file dt.h.

◆ IGNORE_DTF

#define IGNORE_DTF   8

Definition at line 98 of file dt.h.

◆ INTERVAL_FULL_RANGE

#define INTERVAL_FULL_RANGE   (0x7FFF)

Definition at line 22 of file dt.h.

◆ INTERVAL_MASK

#define INTERVAL_MASK (   b)    (1 << (b))

Definition at line 23 of file dt.h.

◆ INTSTYLE_ISO_8601

#define INTSTYLE_ISO_8601   3

Definition at line 20 of file dt.h.

◆ INTSTYLE_POSTGRES

#define INTSTYLE_POSTGRES   0

Definition at line 17 of file dt.h.

◆ INTSTYLE_POSTGRES_VERBOSE

#define INTSTYLE_POSTGRES_VERBOSE   1

Definition at line 18 of file dt.h.

◆ INTSTYLE_SQL_STANDARD

#define INTSTYLE_SQL_STANDARD   2

Definition at line 19 of file dt.h.

◆ INVALID

#define INVALID   "invalid"

Definition at line 36 of file dt.h.

◆ IS_VALID_JULIAN

#define IS_VALID_JULIAN (   y,
  m,
 
)
Value:
(((y) > JULIAN_MINYEAR || \
((y) == JULIAN_MINYEAR && ((m) >= JULIAN_MINMONTH))) && \
((y) < JULIAN_MAXYEAR || \
((y) == JULIAN_MAXYEAR && ((m) < JULIAN_MAXMONTH))))
#define JULIAN_MINYEAR
Definition: dt.h:271
#define JULIAN_MAXMONTH
Definition: dt.h:275
#define JULIAN_MINMONTH
Definition: dt.h:272
#define JULIAN_MAXYEAR
Definition: dt.h:274

Definition at line 278 of file dt.h.

◆ IS_VALID_TIMESTAMP

#define IS_VALID_TIMESTAMP (   t)    (MIN_TIMESTAMP <= (t) && (t) < END_TIMESTAMP)

Definition at line 287 of file dt.h.

◆ IS_VALID_UTIME

#define IS_VALID_UTIME (   y,
  m,
 
)
Value:
((((y) > UTIME_MINYEAR) \
|| (((y) == UTIME_MINYEAR) && (((m) > UTIME_MINMONTH) \
|| (((m) == UTIME_MINMONTH) && ((d) >= UTIME_MINDAY))))) \
&& (((y) < UTIME_MAXYEAR) \
|| (((y) == UTIME_MAXYEAR) && (((m) < UTIME_MAXMONTH) \
|| (((m) == UTIME_MAXMONTH) && ((d) <= UTIME_MAXDAY))))))
#define UTIME_MAXMONTH
Definition: dt.h:293
#define UTIME_MINYEAR
Definition: dt.h:289
#define UTIME_MAXDAY
Definition: dt.h:294
#define UTIME_MAXYEAR
Definition: dt.h:292
#define UTIME_MINMONTH
Definition: dt.h:290
#define UTIME_MINDAY
Definition: dt.h:291

Definition at line 296 of file dt.h.

Referenced by timestamp2tm().

◆ isleap

#define isleap (   y)    (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))

Definition at line 265 of file dt.h.

◆ ISODATE

#define ISODATE   22

Definition at line 114 of file dt.h.

◆ ISOTIME

#define ISOTIME   23

Definition at line 115 of file dt.h.

◆ JULIAN

#define JULIAN   4

Definition at line 94 of file dt.h.

◆ JULIAN_MAXDAY

#define JULIAN_MAXDAY   (3)

Definition at line 276 of file dt.h.

◆ JULIAN_MAXMONTH

#define JULIAN_MAXMONTH   (6)

Definition at line 275 of file dt.h.

◆ JULIAN_MAXYEAR

#define JULIAN_MAXYEAR   (5874898)

Definition at line 274 of file dt.h.

◆ JULIAN_MINDAY

#define JULIAN_MINDAY   (24)

Definition at line 273 of file dt.h.

◆ JULIAN_MINMONTH

#define JULIAN_MINMONTH   (11)

Definition at line 272 of file dt.h.

◆ JULIAN_MINYEAR

#define JULIAN_MINYEAR   (-4713)

Definition at line 271 of file dt.h.

◆ LATE

#define LATE   "infinity"

Definition at line 38 of file dt.h.

◆ MAX_INTERVAL_PRECISION

#define MAX_INTERVAL_PRECISION   6

Definition at line 24 of file dt.h.

◆ MAXDATEFIELDS

#define MAXDATEFIELDS   25

Definition at line 196 of file dt.h.

◆ MAXDATELEN

#define MAXDATELEN   128

Definition at line 194 of file dt.h.

◆ MAXTZLEN

#define MAXTZLEN   10

Definition at line 8 of file dt.h.

◆ MICROSECOND

#define MICROSECOND   14

Definition at line 104 of file dt.h.

◆ MILLISECOND

#define MILLISECOND   13

Definition at line 103 of file dt.h.

◆ MIN_TIMESTAMP

#define MIN_TIMESTAMP   INT64CONST(-211813488000000000)

Definition at line 284 of file dt.h.

◆ MINS_PER_HOUR

#define MINS_PER_HOUR   60

Definition at line 254 of file dt.h.

◆ MINUTE

#define MINUTE   11

Definition at line 101 of file dt.h.

◆ MONTH

#define MONTH   1

Definition at line 91 of file dt.h.

◆ MONTHS_PER_YEAR

#define MONTHS_PER_YEAR   12

Definition at line 234 of file dt.h.

◆ NOW

#define NOW   "now"

Definition at line 39 of file dt.h.

◆ PM

#define PM   1

Definition at line 70 of file dt.h.

◆ RESERV

#define RESERV   0

Definition at line 90 of file dt.h.

◆ SECOND

#define SECOND   12

Definition at line 102 of file dt.h.

◆ SECS_PER_DAY

#define SECS_PER_DAY   86400

Definition at line 251 of file dt.h.

◆ SECS_PER_HOUR

#define SECS_PER_HOUR   3600

Definition at line 252 of file dt.h.

◆ SECS_PER_MINUTE

#define SECS_PER_MINUTE   60

Definition at line 253 of file dt.h.

◆ SECS_PER_YEAR

#define SECS_PER_YEAR   (36525 * 864) /* avoid floating-point computation */

Definition at line 250 of file dt.h.

◆ TIMESTAMP_IS_NOBEGIN

#define TIMESTAMP_IS_NOBEGIN (   j)    ((j) == DT_NOBEGIN)

Definition at line 308 of file dt.h.

◆ TIMESTAMP_IS_NOEND

#define TIMESTAMP_IS_NOEND (   j)    ((j) == DT_NOEND)

Definition at line 309 of file dt.h.

◆ TIMESTAMP_NOBEGIN

#define TIMESTAMP_NOBEGIN (   j)    do {(j) = DT_NOBEGIN;} while (0)

Definition at line 306 of file dt.h.

◆ TIMESTAMP_NOEND

#define TIMESTAMP_NOEND (   j)    do {(j) = DT_NOEND;} while (0)

Definition at line 307 of file dt.h.

◆ TIMESTAMP_NOT_FINITE

#define TIMESTAMP_NOT_FINITE (   j)    (TIMESTAMP_IS_NOBEGIN(j) || TIMESTAMP_IS_NOEND(j))

Definition at line 310 of file dt.h.

◆ TMODULO

#define TMODULO (   t,
  q,
 
)
Value:
do { \
(q) = ((t) / (u)); \
if ((q) != 0) (t) -= ((q) * (u)); \
} while(0)

Definition at line 226 of file dt.h.

◆ TODAY

#define TODAY   "today"

Definition at line 40 of file dt.h.

◆ TOKMAXLEN

#define TOKMAXLEN   10

Definition at line 198 of file dt.h.

◆ TOMORROW

#define TOMORROW   "tomorrow"

Definition at line 41 of file dt.h.

◆ TZ

#define TZ   5 /* fixed-offset timezone abbreviation */

Definition at line 95 of file dt.h.

◆ UNITS

#define UNITS   17

Definition at line 107 of file dt.h.

◆ UNKNOWN_FIELD

#define UNKNOWN_FIELD   31

Definition at line 119 of file dt.h.

◆ USE_GERMAN_DATES

#define USE_GERMAN_DATES   3

Definition at line 15 of file dt.h.

◆ USE_ISO_DATES

#define USE_ISO_DATES   1

Definition at line 13 of file dt.h.

◆ USE_POSTGRES_DATES

#define USE_POSTGRES_DATES   0

Definition at line 12 of file dt.h.

◆ USE_SQL_DATES

#define USE_SQL_DATES   2

Definition at line 14 of file dt.h.

◆ USECS_PER_DAY

#define USECS_PER_DAY   INT64CONST(86400000000)

Definition at line 256 of file dt.h.

◆ USECS_PER_HOUR

#define USECS_PER_HOUR   INT64CONST(3600000000)

Definition at line 257 of file dt.h.

◆ USECS_PER_MINUTE

#define USECS_PER_MINUTE   INT64CONST(60000000)

Definition at line 258 of file dt.h.

◆ USECS_PER_SEC

#define USECS_PER_SEC   INT64CONST(1000000)

Definition at line 259 of file dt.h.

◆ UTIME_MAXDAY

#define UTIME_MAXDAY   (18)

Definition at line 294 of file dt.h.

◆ UTIME_MAXMONTH

#define UTIME_MAXMONTH   (01)

Definition at line 293 of file dt.h.

◆ UTIME_MAXYEAR

#define UTIME_MAXYEAR   (2038)

Definition at line 292 of file dt.h.

◆ UTIME_MINDAY

#define UTIME_MINDAY   (14)

Definition at line 291 of file dt.h.

◆ UTIME_MINMONTH

#define UTIME_MINMONTH   (12)

Definition at line 290 of file dt.h.

◆ UTIME_MINYEAR

#define UTIME_MINYEAR   (1901)

Definition at line 289 of file dt.h.

◆ YEAR

#define YEAR   2

Definition at line 92 of file dt.h.

◆ YESTERDAY

#define YESTERDAY   "yesterday"

Definition at line 42 of file dt.h.

◆ ZULU

#define ZULU   "zulu"

Definition at line 43 of file dt.h.

Typedef Documentation

◆ fsec_t

Definition at line 10 of file dt.h.

Function Documentation

◆ CheckDateTokenTables()

bool CheckDateTokenTables ( void  )

Definition at line 4438 of file datetime.c.

References Assert, CheckDateTokenTable(), date2j(), POSTGRES_EPOCH_JDATE, szdatetktbl, szdeltatktbl, and UNIX_EPOCH_JDATE.

Referenced by PostmasterMain().

4439 {
4440  bool ok = true;
4441 
4442  Assert(UNIX_EPOCH_JDATE == date2j(1970, 1, 1));
4443  Assert(POSTGRES_EPOCH_JDATE == date2j(2000, 1, 1));
4444 
4445  ok &= CheckDateTokenTable("datetktbl", datetktbl, szdatetktbl);
4446  ok &= CheckDateTokenTable("deltatktbl", deltatktbl, szdeltatktbl);
4447  return ok;
4448 }
static const datetkn datetktbl[]
Definition: datetime.c:90
static const int szdeltatktbl
Definition: datetime.c:236
static bool CheckDateTokenTable(const char *tablename, const datetkn *base, int nel)
Definition: datetime.c:4406
static const datetkn deltatktbl[]
Definition: datetime.c:171
int date2j(int y, int m, int d)
Definition: datetime.c:270
#define Assert(condition)
Definition: c.h:732
static const int szdatetktbl
Definition: datetime.c:165
#define UNIX_EPOCH_JDATE
Definition: timestamp.h:162
#define POSTGRES_EPOCH_JDATE
Definition: timestamp.h:163

◆ date2j()

int date2j ( int  ,
int  ,
int   
)

Definition at line 270 of file datetime.c.

Referenced by CheckDateTokenTables(), date2isoweek(), date2isoyear(), date2isoyearday(), date_in(), DCH_to_char(), DecodeDateTime(), DecodeNumber(), DetermineTimeZoneOffsetInternal(), EncodeDateTime(), GetSQLCurrentDate(), isoweek2j(), make_date(), make_timestamp_internal(), PGTYPESdate_dayofweek(), PGTYPESdate_defmt_asc(), PGTYPESdate_fmt_asc(), PGTYPESdate_from_asc(), PGTYPESdate_julmdy(), PGTYPESdate_mdyjul(), PGTYPESdate_to_asc(), PGTYPESdate_today(), timestamp2tm(), timestamp_date(), timestamp_part(), timestamp_pl_interval(), timestamp_to_char(), timestamptz_date(), timestamptz_part(), timestamptz_pl_interval(), timestamptz_to_char(), tm2timestamp(), to_date(), and ValidateDate().

271 {
272  int julian;
273  int century;
274 
275  if (m > 2)
276  {
277  m += 1;
278  y += 4800;
279  }
280  else
281  {
282  m += 13;
283  y += 4799;
284  }
285 
286  century = y / 100;
287  julian = y * 365 - 32167;
288  julian += y / 4 - century + century / 4;
289  julian += 7834 * m / 256 + d;
290 
291  return julian;
292 } /* date2j() */

◆ DecodeDateTime()

int DecodeDateTime ( char **  ,
int *  ,
int  ,
int *  ,
struct tm ,
fsec_t ,
bool   
)

Definition at line 1781 of file dt_common.c.

References ADBC, AM, AMPM, BC, date2j(), DAY, day_tab, DecodeDate(), DecodeNumber(), DecodeNumberField(), DecodePosixTimezone(), DecodeSpecial(), DecodeTime(), DecodeTimezone(), DOW, dt2time(), DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_HOUR, DTK_JULIAN, DTK_M, DTK_MINUTE, DTK_MONTH, DTK_NOW, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TIME_M, DTK_TODAY, DTK_TOMORROW, DTK_TZ, DTK_YEAR, DTK_YESTERDAY, DTK_ZULU, DTZ, DTZMOD, GetCurrentDateTime(), HOUR, HR24, i, IGNORE_DTF, isleap, ISOTIME, j2date(), MINUTE, MONTH, PM, RESERV, SECOND, strtoint(), generate_unaccent_rules::type, TZ, UNITS, USECS_PER_DAY, val, and YEAR.

1783 {
1784  int fmask = 0,
1785  tmask,
1786  type;
1787  int ptype = 0; /* "prefix type" for ISO y2001m02d04 format */
1788  int i;
1789  int val;
1790  int mer = HR24;
1791  bool haveTextMonth = false;
1792  bool is2digits = false;
1793  bool bc = false;
1794  int t = 0;
1795  int *tzp = &t;
1796 
1797  /***
1798  * We'll insist on at least all of the date fields, but initialize the
1799  * remaining fields in case they are not set later...
1800  ***/
1801  *dtype = DTK_DATE;
1802  tm->tm_hour = 0;
1803  tm->tm_min = 0;
1804  tm->tm_sec = 0;
1805  *fsec = 0;
1806  /* don't know daylight savings time status apriori */
1807  tm->tm_isdst = -1;
1808  if (tzp != NULL)
1809  *tzp = 0;
1810 
1811  for (i = 0; i < nf; i++)
1812  {
1813  switch (ftype[i])
1814  {
1815  case DTK_DATE:
1816  /***
1817  * Integral julian day with attached time zone?
1818  * All other forms with JD will be separated into
1819  * distinct fields, so we handle just this case here.
1820  ***/
1821  if (ptype == DTK_JULIAN)
1822  {
1823  char *cp;
1824  int val;
1825 
1826  if (tzp == NULL)
1827  return -1;
1828 
1829  val = strtoint(field[i], &cp, 10);
1830  if (*cp != '-')
1831  return -1;
1832 
1833  j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
1834  /* Get the time zone from the end of the string */
1835  if (DecodeTimezone(cp, tzp) != 0)
1836  return -1;
1837 
1838  tmask = DTK_DATE_M | DTK_TIME_M | DTK_M(TZ);
1839  ptype = 0;
1840  break;
1841  }
1842  /***
1843  * Already have a date? Then this might be a POSIX time
1844  * zone with an embedded dash (e.g. "PST-3" == "EST") or
1845  * a run-together time with trailing time zone (e.g. hhmmss-zz).
1846  * - thomas 2001-12-25
1847  ***/
1848  else if (((fmask & DTK_DATE_M) == DTK_DATE_M)
1849  || (ptype != 0))
1850  {
1851  /* No time zone accepted? Then quit... */
1852  if (tzp == NULL)
1853  return -1;
1854 
1855  if (isdigit((unsigned char) *field[i]) || ptype != 0)
1856  {
1857  char *cp;
1858 
1859  if (ptype != 0)
1860  {
1861  /* Sanity check; should not fail this test */
1862  if (ptype != DTK_TIME)
1863  return -1;
1864  ptype = 0;
1865  }
1866 
1867  /*
1868  * Starts with a digit but we already have a time
1869  * field? Then we are in trouble with a date and time
1870  * already...
1871  */
1872  if ((fmask & DTK_TIME_M) == DTK_TIME_M)
1873  return -1;
1874 
1875  if ((cp = strchr(field[i], '-')) == NULL)
1876  return -1;
1877 
1878  /* Get the time zone from the end of the string */
1879  if (DecodeTimezone(cp, tzp) != 0)
1880  return -1;
1881  *cp = '\0';
1882 
1883  /*
1884  * Then read the rest of the field as a concatenated
1885  * time
1886  */
1887  if ((ftype[i] = DecodeNumberField(strlen(field[i]), field[i], fmask,
1888  &tmask, tm, fsec, &is2digits)) < 0)
1889  return -1;
1890 
1891  /*
1892  * modify tmask after returning from
1893  * DecodeNumberField()
1894  */
1895  tmask |= DTK_M(TZ);
1896  }
1897  else
1898  {
1899  if (DecodePosixTimezone(field[i], tzp) != 0)
1900  return -1;
1901 
1902  ftype[i] = DTK_TZ;
1903  tmask = DTK_M(TZ);
1904  }
1905  }
1906  else if (DecodeDate(field[i], fmask, &tmask, tm, EuroDates) != 0)
1907  return -1;
1908  break;
1909 
1910  case DTK_TIME:
1911  if (DecodeTime(field[i], &tmask, tm, fsec) != 0)
1912  return -1;
1913 
1914  /*
1915  * Check upper limit on hours; other limits checked in
1916  * DecodeTime()
1917  */
1918  /* test for > 24:00:00 */
1919  if (tm->tm_hour > 24 ||
1920  (tm->tm_hour == 24 && (tm->tm_min > 0 || tm->tm_sec > 0)))
1921  return -1;
1922  break;
1923 
1924  case DTK_TZ:
1925  {
1926  int tz;
1927 
1928  if (tzp == NULL)
1929  return -1;
1930 
1931  if (DecodeTimezone(field[i], &tz) != 0)
1932  return -1;
1933 
1934  /*
1935  * Already have a time zone? Then maybe this is the second
1936  * field of a POSIX time: EST+3 (equivalent to PST)
1937  */
1938  if (i > 0 && (fmask & DTK_M(TZ)) != 0 &&
1939  ftype[i - 1] == DTK_TZ &&
1940  isalpha((unsigned char) *field[i - 1]))
1941  {
1942  *tzp -= tz;
1943  tmask = 0;
1944  }
1945  else
1946  {
1947  *tzp = tz;
1948  tmask = DTK_M(TZ);
1949  }
1950  }
1951  break;
1952 
1953  case DTK_NUMBER:
1954 
1955  /*
1956  * Was this an "ISO date" with embedded field labels? An
1957  * example is "y2001m02d04" - thomas 2001-02-04
1958  */
1959  if (ptype != 0)
1960  {
1961  char *cp;
1962  int val;
1963 
1964  val = strtoint(field[i], &cp, 10);
1965 
1966  /*
1967  * only a few kinds are allowed to have an embedded
1968  * decimal
1969  */
1970  if (*cp == '.')
1971  switch (ptype)
1972  {
1973  case DTK_JULIAN:
1974  case DTK_TIME:
1975  case DTK_SECOND:
1976  break;
1977  default:
1978  return 1;
1979  break;
1980  }
1981  else if (*cp != '\0')
1982  return -1;
1983 
1984  switch (ptype)
1985  {
1986  case DTK_YEAR:
1987  tm->tm_year = val;
1988  tmask = DTK_M(YEAR);
1989  break;
1990 
1991  case DTK_MONTH:
1992 
1993  /*
1994  * already have a month and hour? then assume
1995  * minutes
1996  */
1997  if ((fmask & DTK_M(MONTH)) != 0 &&
1998  (fmask & DTK_M(HOUR)) != 0)
1999  {
2000  tm->tm_min = val;
2001  tmask = DTK_M(MINUTE);
2002  }
2003  else
2004  {
2005  tm->tm_mon = val;
2006  tmask = DTK_M(MONTH);
2007  }
2008  break;
2009 
2010  case DTK_DAY:
2011  tm->tm_mday = val;
2012  tmask = DTK_M(DAY);
2013  break;
2014 
2015  case DTK_HOUR:
2016  tm->tm_hour = val;
2017  tmask = DTK_M(HOUR);
2018  break;
2019 
2020  case DTK_MINUTE:
2021  tm->tm_min = val;
2022  tmask = DTK_M(MINUTE);
2023  break;
2024 
2025  case DTK_SECOND:
2026  tm->tm_sec = val;
2027  tmask = DTK_M(SECOND);
2028  if (*cp == '.')
2029  {
2030  double frac;
2031 
2032  frac = strtod(cp, &cp);
2033  if (*cp != '\0')
2034  return -1;
2035  *fsec = frac * 1000000;
2036  }
2037  break;
2038 
2039  case DTK_TZ:
2040  tmask = DTK_M(TZ);
2041  if (DecodeTimezone(field[i], tzp) != 0)
2042  return -1;
2043  break;
2044 
2045  case DTK_JULIAN:
2046  /***
2047  * previous field was a label for "julian date"?
2048  ***/
2049  tmask = DTK_DATE_M;
2050  j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
2051  /* fractional Julian Day? */
2052  if (*cp == '.')
2053  {
2054  double time;
2055 
2056  time = strtod(cp, &cp);
2057  if (*cp != '\0')
2058  return -1;
2059 
2060  tmask |= DTK_TIME_M;
2061  dt2time((time * USECS_PER_DAY), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
2062  }
2063  break;
2064 
2065  case DTK_TIME:
2066  /* previous field was "t" for ISO time */
2067  if ((ftype[i] = DecodeNumberField(strlen(field[i]), field[i], (fmask | DTK_DATE_M),
2068  &tmask, tm, fsec, &is2digits)) < 0)
2069  return -1;
2070 
2071  if (tmask != DTK_TIME_M)
2072  return -1;
2073  break;
2074 
2075  default:
2076  return -1;
2077  break;
2078  }
2079 
2080  ptype = 0;
2081  *dtype = DTK_DATE;
2082  }
2083  else
2084  {
2085  char *cp;
2086  int flen;
2087 
2088  flen = strlen(field[i]);
2089  cp = strchr(field[i], '.');
2090 
2091  /* Embedded decimal and no date yet? */
2092  if (cp != NULL && !(fmask & DTK_DATE_M))
2093  {
2094  if (DecodeDate(field[i], fmask, &tmask, tm, EuroDates) != 0)
2095  return -1;
2096  }
2097  /* embedded decimal and several digits before? */
2098  else if (cp != NULL && flen - strlen(cp) > 2)
2099  {
2100  /*
2101  * Interpret as a concatenated date or time Set the
2102  * type field to allow decoding other fields later.
2103  * Example: 20011223 or 040506
2104  */
2105  if ((ftype[i] = DecodeNumberField(flen, field[i], fmask,
2106  &tmask, tm, fsec, &is2digits)) < 0)
2107  return -1;
2108  }
2109  else if (flen > 4)
2110  {
2111  if ((ftype[i] = DecodeNumberField(flen, field[i], fmask,
2112  &tmask, tm, fsec, &is2digits)) < 0)
2113  return -1;
2114  }
2115  /* otherwise it is a single date/time field... */
2116  else if (DecodeNumber(flen, field[i], fmask,
2117  &tmask, tm, fsec, &is2digits, EuroDates) != 0)
2118  return -1;
2119  }
2120  break;
2121 
2122  case DTK_STRING:
2123  case DTK_SPECIAL:
2124  type = DecodeSpecial(i, field[i], &val);
2125  if (type == IGNORE_DTF)
2126  continue;
2127 
2128  tmask = DTK_M(type);
2129  switch (type)
2130  {
2131  case RESERV:
2132  switch (val)
2133  {
2134  case DTK_NOW:
2135  tmask = (DTK_DATE_M | DTK_TIME_M | DTK_M(TZ));
2136  *dtype = DTK_DATE;
2138  break;
2139 
2140  case DTK_YESTERDAY:
2141  tmask = DTK_DATE_M;
2142  *dtype = DTK_DATE;
2144  j2date(date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - 1,
2145  &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
2146  tm->tm_hour = 0;
2147  tm->tm_min = 0;
2148  tm->tm_sec = 0;
2149  break;
2150 
2151  case DTK_TODAY:
2152  tmask = DTK_DATE_M;
2153  *dtype = DTK_DATE;
2155  tm->tm_hour = 0;
2156  tm->tm_min = 0;
2157  tm->tm_sec = 0;
2158  break;
2159 
2160  case DTK_TOMORROW:
2161  tmask = DTK_DATE_M;
2162  *dtype = DTK_DATE;
2164  j2date(date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) + 1,
2165  &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
2166  tm->tm_hour = 0;
2167  tm->tm_min = 0;
2168  tm->tm_sec = 0;
2169  break;
2170 
2171  case DTK_ZULU:
2172  tmask = (DTK_TIME_M | DTK_M(TZ));
2173  *dtype = DTK_DATE;
2174  tm->tm_hour = 0;
2175  tm->tm_min = 0;
2176  tm->tm_sec = 0;
2177  if (tzp != NULL)
2178  *tzp = 0;
2179  break;
2180 
2181  default:
2182  *dtype = val;
2183  }
2184 
2185  break;
2186 
2187  case MONTH:
2188 
2189  /*
2190  * already have a (numeric) month? then see if we can
2191  * substitute...
2192  */
2193  if ((fmask & DTK_M(MONTH)) && !haveTextMonth &&
2194  !(fmask & DTK_M(DAY)) && tm->tm_mon >= 1 && tm->tm_mon <= 31)
2195  {
2196  tm->tm_mday = tm->tm_mon;
2197  tmask = DTK_M(DAY);
2198  }
2199  haveTextMonth = true;
2200  tm->tm_mon = val;
2201  break;
2202 
2203  case DTZMOD:
2204 
2205  /*
2206  * daylight savings time modifier (solves "MET DST"
2207  * syntax)
2208  */
2209  tmask |= DTK_M(DTZ);
2210  tm->tm_isdst = 1;
2211  if (tzp == NULL)
2212  return -1;
2213  *tzp -= val;
2214  break;
2215 
2216  case DTZ:
2217 
2218  /*
2219  * set mask for TZ here _or_ check for DTZ later when
2220  * getting default timezone
2221  */
2222  tmask |= DTK_M(TZ);
2223  tm->tm_isdst = 1;
2224  if (tzp == NULL)
2225  return -1;
2226  *tzp = -val;
2227  ftype[i] = DTK_TZ;
2228  break;
2229 
2230  case TZ:
2231  tm->tm_isdst = 0;
2232  if (tzp == NULL)
2233  return -1;
2234  *tzp = -val;
2235  ftype[i] = DTK_TZ;
2236  break;
2237 
2238  case IGNORE_DTF:
2239  break;
2240 
2241  case AMPM:
2242  mer = val;
2243  break;
2244 
2245  case ADBC:
2246  bc = (val == BC);
2247  break;
2248 
2249  case DOW:
2250  tm->tm_wday = val;
2251  break;
2252 
2253  case UNITS:
2254  tmask = 0;
2255  ptype = val;
2256  break;
2257 
2258  case ISOTIME:
2259 
2260  /*
2261  * This is a filler field "t" indicating that the next
2262  * field is time. Try to verify that this is sensible.
2263  */
2264  tmask = 0;
2265 
2266  /* No preceding date? Then quit... */
2267  if ((fmask & DTK_DATE_M) != DTK_DATE_M)
2268  return -1;
2269 
2270  /***
2271  * We will need one of the following fields:
2272  * DTK_NUMBER should be hhmmss.fff
2273  * DTK_TIME should be hh:mm:ss.fff
2274  * DTK_DATE should be hhmmss-zz
2275  ***/
2276  if (i >= nf - 1 ||
2277  (ftype[i + 1] != DTK_NUMBER &&
2278  ftype[i + 1] != DTK_TIME &&
2279  ftype[i + 1] != DTK_DATE))
2280  return -1;
2281 
2282  ptype = val;
2283  break;
2284 
2285  default:
2286  return -1;
2287  }
2288  break;
2289 
2290  default:
2291  return -1;
2292  }
2293 
2294  if (tmask & fmask)
2295  return -1;
2296  fmask |= tmask;
2297  }
2298 
2299  /* there is no year zero in AD/BC notation; i.e. "1 BC" == year 0 */
2300  if (bc)
2301  {
2302  if (tm->tm_year > 0)
2303  tm->tm_year = -(tm->tm_year - 1);
2304  else
2305  return -1;
2306  }
2307  else if (is2digits)
2308  {
2309  if (tm->tm_year < 70)
2310  tm->tm_year += 2000;
2311  else if (tm->tm_year < 100)
2312  tm->tm_year += 1900;
2313  }
2314 
2315  if (mer != HR24 && tm->tm_hour > 12)
2316  return -1;
2317  if (mer == AM && tm->tm_hour == 12)
2318  tm->tm_hour = 0;
2319  else if (mer == PM && tm->tm_hour != 12)
2320  tm->tm_hour += 12;
2321 
2322  /* do additional checking for full date specs... */
2323  if (*dtype == DTK_DATE)
2324  {
2325  if ((fmask & DTK_DATE_M) != DTK_DATE_M)
2326  return ((fmask & DTK_TIME_M) == DTK_TIME_M) ? 1 : -1;
2327 
2328  /*
2329  * check for valid day of month, now that we know for sure the month
2330  * and year...
2331  */
2332  if (tm->tm_mday < 1 || tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1])
2333  return -1;
2334 
2335  /*
2336  * backend tried to find local timezone here but we don't use the
2337  * result afterwards anyway so we only check for this error: daylight
2338  * savings time modifier but no standard timezone?
2339  */
2340  if ((fmask & DTK_DATE_M) == DTK_DATE_M && tzp != NULL && !(fmask & DTK_M(TZ)) && (fmask & DTK_M(DTZMOD)))
2341  return -1;
2342  }
2343 
2344  return 0;
2345 } /* DecodeDateTime() */
static int DecodeNumberField(int len, char *str, int fmask, int *tmask, struct tm *tm, fsec_t *fsec, bool *is2digits)
Definition: dt_common.c:1087
#define PM
Definition: datetime.h:73
#define DAY
Definition: datetime.h:94
#define UNITS
Definition: datetime.h:108
#define IGNORE_DTF
Definition: datetime.h:99
int tm_wday
Definition: pgtime.h:33
#define DTK_JULIAN
Definition: datetime.h:174
#define DTK_YEAR
Definition: datetime.h:168
int tm_isdst
Definition: pgtime.h:35
#define YEAR
Definition: datetime.h:93
int tm_hour
Definition: pgtime.h:29
#define isleap(y)
Definition: datetime.h:271
void GetCurrentDateTime(struct tm *tm)
Definition: dt_common.c:1058
#define DTK_TIME_M
Definition: datetime.h:193
#define TZ
Definition: datetime.h:96
#define SECOND
Definition: datetime.h:103
#define DTK_TODAY
Definition: datetime.h:156
#define DTK_TOMORROW
Definition: datetime.h:157
#define ADBC
Definition: datetime.h:109
static int DecodeTimezone(char *str, int *tzp)
Definition: dt_common.c:1500
int date2j(int y, int m, int d)
Definition: dt_common.c:581
#define DTK_DATE_M
Definition: datetime.h:192
static struct pg_tm tm
Definition: localtime.c:108
void j2date(int jd, int *year, int *month, int *day)
Definition: dt_common.c:606
#define DTK_MONTH
Definition: datetime.h:166
#define DTK_TZ
Definition: datetime.h:147
#define DTK_HOUR
Definition: datetime.h:163
#define DOW
Definition: datetime.h:107
#define AM
Definition: datetime.h:72
#define DTK_SECOND
Definition: datetime.h:161
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
int strtoint(const char *pg_restrict str, char **pg_restrict endptr, int base)
Definition: string.c:50
#define DTK_YESTERDAY
Definition: datetime.h:155
#define DTK_NUMBER
Definition: datetime.h:142
#define MINUTE
Definition: datetime.h:102
#define USECS_PER_DAY
Definition: timestamp.h:91
#define MONTH
Definition: datetime.h:92
#define DTK_MINUTE
Definition: datetime.h:162
#define BC
Definition: datetime.h:77
const int day_tab[2][13]
Definition: dt_common.c:14
#define ISOTIME
Definition: datetime.h:116
#define DTK_TIME
Definition: datetime.h:146
static int DecodeSpecial(int field, char *lowtoken, int *val)
Definition: dt_common.c:637
#define AMPM
Definition: datetime.h:100
#define DTK_STRING
Definition: datetime.h:143
#define DTK_DAY
Definition: datetime.h:164
int DecodeTime(char *str, int *tmask, struct tm *tm, fsec_t *fsec)
Definition: dt_common.c:1435
#define RESERV
Definition: datetime.h:91
#define DTZ
Definition: datetime.h:97
static int DecodeNumber(int flen, char *str, int fmask, int *tmask, struct tm *tm, fsec_t *fsec, bool *is2digits, bool EuroDates)
Definition: dt_common.c:1197
int tm_year
Definition: pgtime.h:32
#define DTK_NOW
Definition: datetime.h:154
static int DecodePosixTimezone(char *str, int *tzp)
Definition: dt_common.c:1545
int i
#define DTK_M(t)
Definition: datetime.h:188
#define HOUR
Definition: datetime.h:101
void dt2time(double jd, int *hour, int *min, int *sec, fsec_t *fsec)
Definition: dt_common.c:1066
#define DTK_ZULU
Definition: datetime.h:158
int tm_sec
Definition: pgtime.h:27
#define DTZMOD
Definition: datetime.h:123
static int DecodeDate(char *str, int fmask, int *tmask, struct tm *tm, bool EuroDates)
Definition: dt_common.c:1306
int tm_min
Definition: pgtime.h:28
long val
Definition: informix.c:684
#define DTK_DATE
Definition: datetime.h:145
#define HR24
Definition: datetime.h:74
#define DTK_SPECIAL
Definition: datetime.h:150

◆ DecodeInterval()

int DecodeInterval ( char **  ,
int *  ,
int  ,
int *  ,
struct tm ,
fsec_t  
)

Definition at line 326 of file interval.c.

References AdjustFractDays(), AdjustFractSeconds(), AGO, Assert, ClearPgTm(), DAY, DAYS_PER_MONTH, DecodeTime(), DecodeUnits(), DTERR_BAD_FORMAT, DTERR_FIELD_OVERFLOW, DTK_ALL_SECS_M, DTK_CENTURY, DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_DECADE, DTK_DELTA, DTK_HOUR, DTK_M, DTK_MICROSEC, DTK_MILLENNIUM, DTK_MILLISEC, DTK_MINUTE, DTK_MONTH, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TIME_M, DTK_TZ, DTK_WEEK, DTK_YEAR, HOUR, i, IGNORE_DTF, INTERVAL_FULL_RANGE, INTERVAL_MASK, IntervalStyle, INTSTYLE_POSTGRES_VERBOSE, INTSTYLE_SQL_STANDARD, MICROSECOND, MILLISECOND, MINUTE, MONTH, MONTHS_PER_YEAR, range(), RESERV, rint(), SECOND, SECS_PER_DAY, SECS_PER_HOUR, SECS_PER_MINUTE, strtoint(), generate_unaccent_rules::type, TZ, UNITS, USECS_PER_SEC, val, and YEAR.

Referenced by PGTYPESinterval_from_asc().

328 {
331  bool is_before = false;
332  char *cp;
333  int fmask = 0,
334  tmask,
335  type;
336  int i;
337  int dterr;
338  int val;
339  double fval;
340 
341  *dtype = DTK_DELTA;
342  type = IGNORE_DTF;
343  ClearPgTm(tm, fsec);
344 
345  /* read through list backwards to pick up units before values */
346  for (i = nf - 1; i >= 0; i--)
347  {
348  switch (ftype[i])
349  {
350  case DTK_TIME:
351  dterr = DecodeTime(field[i], /* range, */
352  &tmask, tm, fsec);
353  if (dterr)
354  return dterr;
355  type = DTK_DAY;
356  break;
357 
358  case DTK_TZ:
359 
360  /*
361  * Timezone is a token with a leading sign character and at
362  * least one digit; there could be ':', '.', '-' embedded in
363  * it as well.
364  */
365  Assert(*field[i] == '-' || *field[i] == '+');
366 
367  /*
368  * Try for hh:mm or hh:mm:ss. If not, fall through to
369  * DTK_NUMBER case, which can handle signed float numbers and
370  * signed year-month values.
371  */
372  if (strchr(field[i] + 1, ':') != NULL &&
373  DecodeTime(field[i] + 1, /* INTERVAL_FULL_RANGE, */
374  &tmask, tm, fsec) == 0)
375  {
376  if (*field[i] == '-')
377  {
378  /* flip the sign on all fields */
379  tm->tm_hour = -tm->tm_hour;
380  tm->tm_min = -tm->tm_min;
381  tm->tm_sec = -tm->tm_sec;
382  *fsec = -(*fsec);
383  }
384 
385  /*
386  * Set the next type to be a day, if units are not
387  * specified. This handles the case of '1 +02:03' since we
388  * are reading right to left.
389  */
390  type = DTK_DAY;
391  tmask = DTK_M(TZ);
392  break;
393  }
394  /* FALL THROUGH */
395 
396  case DTK_DATE:
397  case DTK_NUMBER:
398  if (type == IGNORE_DTF)
399  {
400  /* use typmod to decide what rightmost field is */
401  switch (range)
402  {
403  case INTERVAL_MASK(YEAR):
404  type = DTK_YEAR;
405  break;
406  case INTERVAL_MASK(MONTH):
408  type = DTK_MONTH;
409  break;
410  case INTERVAL_MASK(DAY):
411  type = DTK_DAY;
412  break;
413  case INTERVAL_MASK(HOUR):
417  type = DTK_HOUR;
418  break;
419  case INTERVAL_MASK(MINUTE):
421  type = DTK_MINUTE;
422  break;
423  case INTERVAL_MASK(SECOND):
426  type = DTK_SECOND;
427  break;
428  default:
429  type = DTK_SECOND;
430  break;
431  }
432  }
433 
434  errno = 0;
435  val = strtoint(field[i], &cp, 10);
436  if (errno == ERANGE)
437  return DTERR_FIELD_OVERFLOW;
438 
439  if (*cp == '-')
440  {
441  /* SQL "years-months" syntax */
442  int val2;
443 
444  val2 = strtoint(cp + 1, &cp, 10);
445  if (errno == ERANGE || val2 < 0 || val2 >= MONTHS_PER_YEAR)
446  return DTERR_FIELD_OVERFLOW;
447  if (*cp != '\0')
448  return DTERR_BAD_FORMAT;
449  type = DTK_MONTH;
450  if (*field[i] == '-')
451  val2 = -val2;
452  val = val * MONTHS_PER_YEAR + val2;
453  fval = 0;
454  }
455  else if (*cp == '.')
456  {
457  errno = 0;
458  fval = strtod(cp, &cp);
459  if (*cp != '\0' || errno != 0)
460  return DTERR_BAD_FORMAT;
461 
462  if (*field[i] == '-')
463  fval = -fval;
464  }
465  else if (*cp == '\0')
466  fval = 0;
467  else
468  return DTERR_BAD_FORMAT;
469 
470  tmask = 0; /* DTK_M(type); */
471 
472  switch (type)
473  {
474  case DTK_MICROSEC:
475  *fsec += rint(val + fval);
476  tmask = DTK_M(MICROSECOND);
477  break;
478 
479  case DTK_MILLISEC:
480  *fsec += rint((val + fval) * 1000);
481  tmask = DTK_M(MILLISECOND);
482  break;
483 
484  case DTK_SECOND:
485  tm->tm_sec += val;
486  *fsec += rint(fval * 1000000);
487 
488  /*
489  * If any subseconds were specified, consider this
490  * microsecond and millisecond input as well.
491  */
492  if (fval == 0)
493  tmask = DTK_M(SECOND);
494  else
495  tmask = DTK_ALL_SECS_M;
496  break;
497 
498  case DTK_MINUTE:
499  tm->tm_min += val;
500  AdjustFractSeconds(fval, tm, fsec, SECS_PER_MINUTE);
501  tmask = DTK_M(MINUTE);
502  break;
503 
504  case DTK_HOUR:
505  tm->tm_hour += val;
506  AdjustFractSeconds(fval, tm, fsec, SECS_PER_HOUR);
507  tmask = DTK_M(HOUR);
508  type = DTK_DAY;
509  break;
510 
511  case DTK_DAY:
512  tm->tm_mday += val;
513  AdjustFractSeconds(fval, tm, fsec, SECS_PER_DAY);
514  tmask = (fmask & DTK_M(DAY)) ? 0 : DTK_M(DAY);
515  break;
516 
517  case DTK_WEEK:
518  tm->tm_mday += val * 7;
519  AdjustFractDays(fval, tm, fsec, 7);
520  tmask = (fmask & DTK_M(DAY)) ? 0 : DTK_M(DAY);
521  break;
522 
523  case DTK_MONTH:
524  tm->tm_mon += val;
525  AdjustFractDays(fval, tm, fsec, DAYS_PER_MONTH);
526  tmask = DTK_M(MONTH);
527  break;
528 
529  case DTK_YEAR:
530  tm->tm_year += val;
531  if (fval != 0)
532  tm->tm_mon += fval * MONTHS_PER_YEAR;
533  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
534  break;
535 
536  case DTK_DECADE:
537  tm->tm_year += val * 10;
538  if (fval != 0)
539  tm->tm_mon += fval * MONTHS_PER_YEAR * 10;
540  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
541  break;
542 
543  case DTK_CENTURY:
544  tm->tm_year += val * 100;
545  if (fval != 0)
546  tm->tm_mon += fval * MONTHS_PER_YEAR * 100;
547  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
548  break;
549 
550  case DTK_MILLENNIUM:
551  tm->tm_year += val * 1000;
552  if (fval != 0)
553  tm->tm_mon += fval * MONTHS_PER_YEAR * 1000;
554  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
555  break;
556 
557  default:
558  return DTERR_BAD_FORMAT;
559  }
560  break;
561 
562  case DTK_STRING:
563  case DTK_SPECIAL:
564  type = DecodeUnits(i, field[i], &val);
565  if (type == IGNORE_DTF)
566  continue;
567 
568  tmask = 0; /* DTK_M(type); */
569  switch (type)
570  {
571  case UNITS:
572  type = val;
573  break;
574 
575  case AGO:
576  is_before = true;
577  type = val;
578  break;
579 
580  case RESERV:
581  tmask = (DTK_DATE_M | DTK_TIME_M);
582  *dtype = val;
583  break;
584 
585  default:
586  return DTERR_BAD_FORMAT;
587  }
588  break;
589 
590  default:
591  return DTERR_BAD_FORMAT;
592  }
593 
594  if (tmask & fmask)
595  return DTERR_BAD_FORMAT;
596  fmask |= tmask;
597  }
598 
599  /* ensure that at least one time field has been found */
600  if (fmask == 0)
601  return DTERR_BAD_FORMAT;
602 
603  /* ensure fractional seconds are fractional */
604  if (*fsec != 0)
605  {
606  int sec;
607 
608  sec = *fsec / USECS_PER_SEC;
609  *fsec -= sec * USECS_PER_SEC;
610  tm->tm_sec += sec;
611  }
612 
613  /*----------
614  * The SQL standard defines the interval literal
615  * '-1 1:00:00'
616  * to mean "negative 1 days and negative 1 hours", while Postgres
617  * traditionally treats this as meaning "negative 1 days and positive
618  * 1 hours". In SQL_STANDARD intervalstyle, we apply the leading sign
619  * to all fields if there are no other explicit signs.
620  *
621  * We leave the signs alone if there are additional explicit signs.
622  * This protects us against misinterpreting postgres-style dump output,
623  * since the postgres-style output code has always put an explicit sign on
624  * all fields following a negative field. But note that SQL-spec output
625  * is ambiguous and can be misinterpreted on load! (So it's best practice
626  * to dump in postgres style, not SQL style.)
627  *----------
628  */
629  if (IntervalStyle == INTSTYLE_SQL_STANDARD && *field[0] == '-')
630  {
631  /* Check for additional explicit signs */
632  bool more_signs = false;
633 
634  for (i = 1; i < nf; i++)
635  {
636  if (*field[i] == '-' || *field[i] == '+')
637  {
638  more_signs = true;
639  break;
640  }
641  }
642 
643  if (!more_signs)
644  {
645  /*
646  * Rather than re-determining which field was field[0], just force
647  * 'em all negative.
648  */
649  if (*fsec > 0)
650  *fsec = -(*fsec);
651  if (tm->tm_sec > 0)
652  tm->tm_sec = -tm->tm_sec;
653  if (tm->tm_min > 0)
654  tm->tm_min = -tm->tm_min;
655  if (tm->tm_hour > 0)
656  tm->tm_hour = -tm->tm_hour;
657  if (tm->tm_mday > 0)
658  tm->tm_mday = -tm->tm_mday;
659  if (tm->tm_mon > 0)
660  tm->tm_mon = -tm->tm_mon;
661  if (tm->tm_year > 0)
662  tm->tm_year = -tm->tm_year;
663  }
664  }
665 
666  /* finally, AGO negates everything */
667  if (is_before)
668  {
669  *fsec = -(*fsec);
670  tm->tm_sec = -tm->tm_sec;
671  tm->tm_min = -tm->tm_min;
672  tm->tm_hour = -tm->tm_hour;
673  tm->tm_mday = -tm->tm_mday;
674  tm->tm_mon = -tm->tm_mon;
675  tm->tm_year = -tm->tm_year;
676  }
677 
678  return 0;
679 }
#define INTSTYLE_POSTGRES_VERBOSE
Definition: miscadmin.h:235
static void AdjustFractDays(double frac, struct tm *tm, fsec_t *fsec, int scale)
Definition: interval.c:41
#define DTERR_BAD_FORMAT
Definition: datetime.h:280
#define DTK_CENTURY
Definition: datetime.h:170
#define DAY
Definition: datetime.h:94
#define UNITS
Definition: datetime.h:108
#define IGNORE_DTF
Definition: datetime.h:99
#define DTK_WEEK
Definition: datetime.h:165
#define DTK_YEAR
Definition: datetime.h:168
#define USECS_PER_SEC
Definition: timestamp.h:94
#define YEAR
Definition: datetime.h:93
#define DTK_DELTA
Definition: datetime.h:160
int tm_hour
Definition: pgtime.h:29
#define AGO
Definition: datetime.h:111
#define DTK_TIME_M
Definition: datetime.h:193
#define DTK_MILLENNIUM
Definition: datetime.h:171
int IntervalStyle
Definition: globals.c:117
#define TZ
Definition: datetime.h:96
#define SECOND
Definition: datetime.h:103
int DecodeUnits(int field, char *lowtoken, int *val)
Definition: datetime.c:3702
#define INTERVAL_FULL_RANGE
Definition: timestamp.h:48
#define DTK_DATE_M
Definition: datetime.h:192
static struct pg_tm tm
Definition: localtime.c:108
static void ClearPgTm(struct tm *tm, fsec_t *fsec)
Definition: interval.c:94
#define DTK_MONTH
Definition: datetime.h:166
#define DTK_MILLISEC
Definition: datetime.h:172
#define MONTHS_PER_YEAR
Definition: timestamp.h:69
#define DTK_DECADE
Definition: datetime.h:169
#define DTK_TZ
Definition: datetime.h:147
#define DTK_HOUR
Definition: datetime.h:163
#define DTERR_FIELD_OVERFLOW
Definition: datetime.h:281
#define MILLISECOND
Definition: datetime.h:104
#define SECS_PER_DAY
Definition: timestamp.h:86
#define DTK_SECOND
Definition: datetime.h:161
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define SECS_PER_MINUTE
Definition: timestamp.h:88
int strtoint(const char *pg_restrict str, char **pg_restrict endptr, int base)
Definition: string.c:50
#define DTK_NUMBER
Definition: datetime.h:142
#define MINUTE
Definition: datetime.h:102
static struct cvec * range(struct vars *v, chr a, chr b, int cases)
Definition: regc_locale.c:416
double rint(double x)
Definition: rint.c:21
#define SECS_PER_HOUR
Definition: timestamp.h:87
#define MONTH
Definition: datetime.h:92
#define DTK_MINUTE
Definition: datetime.h:162
#define DTK_MICROSEC
Definition: datetime.h:173
#define DAYS_PER_MONTH
Definition: timestamp.h:77
#define DTK_TIME
Definition: datetime.h:146
static int DecodeTime(char *str, int fmask, int range, int *tmask, struct pg_tm *tm, fsec_t *fsec)
Definition: datetime.c:2530
static void AdjustFractSeconds(double frac, struct tm *tm, fsec_t *fsec, int scale)
Definition: interval.c:23
#define Assert(condition)
Definition: c.h:732
#define DTK_STRING
Definition: datetime.h:143
#define DTK_DAY
Definition: datetime.h:164
#define RESERV
Definition: datetime.h:91
#define DTK_ALL_SECS_M
Definition: datetime.h:191
#define INTERVAL_MASK(b)
Definition: timestamp.h:45
#define INTSTYLE_SQL_STANDARD
Definition: miscadmin.h:236
int tm_year
Definition: pgtime.h:32
int i
#define DTK_M(t)
Definition: datetime.h:188
#define HOUR
Definition: datetime.h:101
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28
long val
Definition: informix.c:684
#define DTK_DATE
Definition: datetime.h:145
#define DTK_SPECIAL
Definition: datetime.h:150
#define MICROSECOND
Definition: datetime.h:105

◆ DecodeTime()

int DecodeTime ( char *  ,
int *  ,
struct tm ,
fsec_t  
)

Definition at line 1435 of file dt_common.c.

References DTK_TIME_M, i, strtoint(), and USECS_PER_SEC.

Referenced by DecodeDateTime().

1436 {
1437  char *cp;
1438 
1439  *tmask = DTK_TIME_M;
1440 
1441  tm->tm_hour = strtoint(str, &cp, 10);
1442  if (*cp != ':')
1443  return -1;
1444  str = cp + 1;
1445  tm->tm_min = strtoint(str, &cp, 10);
1446  if (*cp == '\0')
1447  {
1448  tm->tm_sec = 0;
1449  *fsec = 0;
1450  }
1451  else if (*cp != ':')
1452  return -1;
1453  else
1454  {
1455  str = cp + 1;
1456  tm->tm_sec = strtoint(str, &cp, 10);
1457  if (*cp == '\0')
1458  *fsec = 0;
1459  else if (*cp == '.')
1460  {
1461  char fstr[7];
1462  int i;
1463 
1464  cp++;
1465 
1466  /*
1467  * OK, we have at most six digits to care about. Let's construct a
1468  * string with those digits, zero-padded on the right, and then do
1469  * the conversion to an integer.
1470  *
1471  * XXX This truncates the seventh digit, unlike rounding it as the
1472  * backend does.
1473  */
1474  for (i = 0; i < 6; i++)
1475  fstr[i] = *cp != '\0' ? *cp++ : '0';
1476  fstr[i] = '\0';
1477  *fsec = strtoint(fstr, &cp, 10);
1478  if (*cp != '\0')
1479  return -1;
1480  }
1481  else
1482  return -1;
1483  }
1484 
1485  /* do a sanity check */
1486  if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_min > 59 ||
1487  tm->tm_sec < 0 || tm->tm_sec > 59 || *fsec >= USECS_PER_SEC)
1488  return -1;
1489 
1490  return 0;
1491 } /* DecodeTime() */
#define USECS_PER_SEC
Definition: timestamp.h:94
int tm_hour
Definition: pgtime.h:29
#define DTK_TIME_M
Definition: datetime.h:193
static struct pg_tm tm
Definition: localtime.c:108
int strtoint(const char *pg_restrict str, char **pg_restrict endptr, int base)
Definition: string.c:50
int i
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28

◆ DecodeUnits()

int DecodeUnits ( int  field,
char *  lowtoken,
int *  val 
)

Definition at line 3702 of file datetime.c.

References datebsearch(), szdeltatktbl, datetkn::token, TOKMAXLEN, datetkn::type, generate_unaccent_rules::type, UNKNOWN_FIELD, and datetkn::value.

Referenced by DecodeInterval(), interval_part(), interval_trunc(), time_part(), timestamp_part(), timestamp_trunc(), timestamptz_part(), timestamptz_trunc_internal(), and timetz_part().

3703 {
3704  int type;
3705  const datetkn *tp;
3706 
3707  tp = deltacache[field];
3708  /* use strncmp so that we match truncated tokens */
3709  if (tp == NULL || strncmp(lowtoken, tp->token, TOKMAXLEN) != 0)
3710  {
3711  tp = datebsearch(lowtoken, deltatktbl, szdeltatktbl);
3712  }
3713  if (tp == NULL)
3714  {
3715  type = UNKNOWN_FIELD;
3716  *val = 0;
3717  }
3718  else
3719  {
3720  deltacache[field] = tp;
3721  type = tp->type;
3722  *val = tp->value;
3723  }
3724 
3725  return type;
3726 } /* DecodeUnits() */
static const datetkn * deltacache[MAXDATEFIELDS]
Definition: datetime.c:244
#define UNKNOWN_FIELD
Definition: datetime.h:125
int32 value
Definition: datetime.h:212
static const int szdeltatktbl
Definition: datetime.c:236
char token[TOKMAXLEN+1]
Definition: datetime.h:210
static const datetkn * datebsearch(const char *key, const datetkn *base, int nel)
Definition: datetime.c:3784
static const datetkn deltatktbl[]
Definition: datetime.c:171
char type
Definition: datetime.h:211
#define TOKMAXLEN
Definition: datetime.h:205
long val
Definition: informix.c:684

◆ dt2time()

void dt2time ( double  ,
int *  ,
int *  ,
int *  ,
fsec_t  
)

Definition at line 1066 of file dt_common.c.

References USECS_PER_HOUR, USECS_PER_MINUTE, and USECS_PER_SEC.

Referenced by DecodeDateTime().

1067 {
1068  int64 time;
1069 
1070  time = jd;
1071  *hour = time / USECS_PER_HOUR;
1072  time -= (*hour) * USECS_PER_HOUR;
1073  *min = time / USECS_PER_MINUTE;
1074  time -= (*min) * USECS_PER_MINUTE;
1075  *sec = time / USECS_PER_SEC;
1076  *fsec = time - (*sec * USECS_PER_SEC);
1077 } /* dt2time() */
#define USECS_PER_SEC
Definition: timestamp.h:94
#define USECS_PER_MINUTE
Definition: timestamp.h:93
#define USECS_PER_HOUR
Definition: timestamp.h:92

◆ EncodeDateOnly()

void EncodeDateOnly ( struct tm tm,
int  style,
char *  str,
bool  EuroDates 
)

Definition at line 671 of file dt_common.c.

References Assert, MONTHS_PER_YEAR, sprintf, USE_GERMAN_DATES, USE_ISO_DATES, USE_POSTGRES_DATES, and USE_SQL_DATES.

672 {
673  Assert(tm->tm_mon >= 1 && tm->tm_mon <= MONTHS_PER_YEAR);
674 
675  switch (style)
676  {
677  case USE_ISO_DATES:
678  /* compatible with ISO date formats */
679  if (tm->tm_year > 0)
680  sprintf(str, "%04d-%02d-%02d",
681  tm->tm_year, tm->tm_mon, tm->tm_mday);
682  else
683  sprintf(str, "%04d-%02d-%02d %s",
684  -(tm->tm_year - 1), tm->tm_mon, tm->tm_mday, "BC");
685  break;
686 
687  case USE_SQL_DATES:
688  /* compatible with Oracle/Ingres date formats */
689  if (EuroDates)
690  sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
691  else
692  sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
693  if (tm->tm_year > 0)
694  sprintf(str + 5, "/%04d", tm->tm_year);
695  else
696  sprintf(str + 5, "/%04d %s", -(tm->tm_year - 1), "BC");
697  break;
698 
699  case USE_GERMAN_DATES:
700  /* German-style date format */
701  sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
702  if (tm->tm_year > 0)
703  sprintf(str + 5, ".%04d", tm->tm_year);
704  else
705  sprintf(str + 5, ".%04d %s", -(tm->tm_year - 1), "BC");
706  break;
707 
708  case USE_POSTGRES_DATES:
709  default:
710  /* traditional date-only style for Postgres */
711  if (EuroDates)
712  sprintf(str, "%02d-%02d", tm->tm_mday, tm->tm_mon);
713  else
714  sprintf(str, "%02d-%02d", tm->tm_mon, tm->tm_mday);
715  if (tm->tm_year > 0)
716  sprintf(str + 5, "-%04d", tm->tm_year);
717  else
718  sprintf(str + 5, "-%04d %s", -(tm->tm_year - 1), "BC");
719  break;
720  }
721 }
#define USE_SQL_DATES
Definition: miscadmin.h:215
#define USE_ISO_DATES
Definition: miscadmin.h:214
static struct pg_tm tm
Definition: localtime.c:108
#define MONTHS_PER_YEAR
Definition: timestamp.h:69
#define sprintf
Definition: port.h:194
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define USE_POSTGRES_DATES
Definition: miscadmin.h:213
#define Assert(condition)
Definition: c.h:732
int tm_year
Definition: pgtime.h:32
#define USE_GERMAN_DATES
Definition: miscadmin.h:216

◆ EncodeDateTime()

void EncodeDateTime ( struct tm tm,
fsec_t  fsec,
bool  print_tz,
int  tz,
const char *  tzn,
int  style,
char *  str,
bool  EuroDates 
)

Definition at line 755 of file dt_common.c.

References date2j(), days, MAXTZLEN, MINS_PER_HOUR, months, SECS_PER_HOUR, sprintf, TrimTrailingZeros(), USE_GERMAN_DATES, USE_ISO_DATES, USE_POSTGRES_DATES, and USE_SQL_DATES.

756 {
757  int day,
758  hour,
759  min;
760 
761  /*
762  * Negative tm_isdst means we have no valid time zone translation.
763  */
764  if (tm->tm_isdst < 0)
765  print_tz = false;
766 
767  switch (style)
768  {
769  case USE_ISO_DATES:
770  /* Compatible with ISO-8601 date formats */
771 
772  sprintf(str, "%04d-%02d-%02d %02d:%02d",
773  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
774  tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min);
775 
776  /*
777  * Print fractional seconds if any. The field widths here should
778  * be at least equal to MAX_TIMESTAMP_PRECISION.
779  */
780  if (fsec != 0)
781  {
782  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
784  }
785  else
786  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
787 
788  if (tm->tm_year <= 0)
789  sprintf(str + strlen(str), " BC");
790 
791  if (print_tz)
792  {
793  hour = -(tz / SECS_PER_HOUR);
794  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
795  if (min != 0)
796  sprintf(str + strlen(str), "%+03d:%02d", hour, min);
797  else
798  sprintf(str + strlen(str), "%+03d", hour);
799  }
800  break;
801 
802  case USE_SQL_DATES:
803  /* Compatible with Oracle/Ingres date formats */
804 
805  if (EuroDates)
806  sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
807  else
808  sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
809 
810  sprintf(str + 5, "/%04d %02d:%02d",
811  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
812  tm->tm_hour, tm->tm_min);
813 
814  /*
815  * Print fractional seconds if any. The field widths here should
816  * be at least equal to MAX_TIMESTAMP_PRECISION.
817  */
818  if (fsec != 0)
819  {
820  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
822  }
823  else
824  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
825 
826  if (tm->tm_year <= 0)
827  sprintf(str + strlen(str), " BC");
828 
829  /*
830  * Note: the uses of %.*s in this function would be risky if the
831  * timezone names ever contain non-ASCII characters. However, all
832  * TZ abbreviations in the IANA database are plain ASCII.
833  */
834 
835  if (print_tz)
836  {
837  if (tzn)
838  sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
839  else
840  {
841  hour = -(tz / SECS_PER_HOUR);
842  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
843  if (min != 0)
844  sprintf(str + strlen(str), "%+03d:%02d", hour, min);
845  else
846  sprintf(str + strlen(str), "%+03d", hour);
847  }
848  }
849  break;
850 
851  case USE_GERMAN_DATES:
852  /* German variant on European style */
853 
854  sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
855 
856  sprintf(str + 5, ".%04d %02d:%02d",
857  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
858  tm->tm_hour, tm->tm_min);
859 
860  /*
861  * Print fractional seconds if any. The field widths here should
862  * be at least equal to MAX_TIMESTAMP_PRECISION.
863  */
864  if (fsec != 0)
865  {
866  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
868  }
869  else
870  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
871 
872  if (tm->tm_year <= 0)
873  sprintf(str + strlen(str), " BC");
874 
875  if (print_tz)
876  {
877  if (tzn)
878  sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
879  else
880  {
881  hour = -(tz / SECS_PER_HOUR);
882  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
883  if (min != 0)
884  sprintf(str + strlen(str), "%+03d:%02d", hour, min);
885  else
886  sprintf(str + strlen(str), "%+03d", hour);
887  }
888  }
889  break;
890 
891  case USE_POSTGRES_DATES:
892  default:
893  /* Backward-compatible with traditional Postgres abstime dates */
894 
895  day = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday);
896  tm->tm_wday = (int) ((day + date2j(2000, 1, 1) + 1) % 7);
897 
898  memcpy(str, days[tm->tm_wday], 3);
899  strcpy(str + 3, " ");
900 
901  if (EuroDates)
902  sprintf(str + 4, "%02d %3s", tm->tm_mday, months[tm->tm_mon - 1]);
903  else
904  sprintf(str + 4, "%3s %02d", months[tm->tm_mon - 1], tm->tm_mday);
905 
906  sprintf(str + 10, " %02d:%02d", tm->tm_hour, tm->tm_min);
907 
908  /*
909  * Print fractional seconds if any. The field widths here should
910  * be at least equal to MAX_TIMESTAMP_PRECISION.
911  */
912  if (fsec != 0)
913  {
914  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
916  }
917  else
918  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
919 
920  sprintf(str + strlen(str), " %04d",
921  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1));
922  if (tm->tm_year <= 0)
923  sprintf(str + strlen(str), " BC");
924 
925  if (print_tz)
926  {
927  if (tzn)
928  sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
929  else
930  {
931  /*
932  * We have a time zone, but no string version. Use the
933  * numeric form, but be sure to include a leading space to
934  * avoid formatting something which would be rejected by
935  * the date/time parser later. - thomas 2001-10-19
936  */
937  hour = -(tz / SECS_PER_HOUR);
938  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
939  if (min != 0)
940  sprintf(str + strlen(str), " %+03d:%02d", hour, min);
941  else
942  sprintf(str + strlen(str), " %+03d", hour);
943  }
944  }
945  break;
946  }
947 }
char * days[]
Definition: dt_common.c:495
int tm_wday
Definition: pgtime.h:33
int tm_isdst
Definition: pgtime.h:35
int tm_hour
Definition: pgtime.h:29
#define USE_SQL_DATES
Definition: miscadmin.h:215
#define MAXTZLEN
Definition: miscadmin.h:241
int date2j(int y, int m, int d)
Definition: dt_common.c:581
#define MINS_PER_HOUR
Definition: timestamp.h:89
#define USE_ISO_DATES
Definition: miscadmin.h:214
static struct pg_tm tm
Definition: localtime.c:108
#define sprintf
Definition: port.h:194
char * months[]
Definition: dt_common.c:493
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define USE_POSTGRES_DATES
Definition: miscadmin.h:213
#define SECS_PER_HOUR
Definition: timestamp.h:87
int tm_year
Definition: pgtime.h:32
#define USE_GERMAN_DATES
Definition: miscadmin.h:216
int tm_sec
Definition: pgtime.h:27
void TrimTrailingZeros(char *str)
Definition: dt_common.c:724
int tm_min
Definition: pgtime.h:28

◆ EncodeInterval()

void EncodeInterval ( struct tm tm,
fsec_t  fsec,
int  style,
char *  str 
)

Definition at line 763 of file interval.c.

References AddISO8601IntPart(), AddPostgresIntPart(), AddVerboseIntPart(), AppendSeconds(), INTSTYLE_ISO_8601, INTSTYLE_POSTGRES, INTSTYLE_POSTGRES_VERBOSE, INTSTYLE_SQL_STANDARD, MAX_INTERVAL_PRECISION, sprintf, and generate_unaccent_rules::str.

Referenced by PGTYPESinterval_to_asc().

764 {
765  char *cp = str;
766  int year = tm->tm_year;
767  int mon = tm->tm_mon;
768  int mday = tm->tm_mday;
769  int hour = tm->tm_hour;
770  int min = tm->tm_min;
771  int sec = tm->tm_sec;
772  bool is_before = false;
773  bool is_zero = true;
774 
775  /*
776  * The sign of year and month are guaranteed to match, since they are
777  * stored internally as "month". But we'll need to check for is_before and
778  * is_zero when determining the signs of day and hour/minute/seconds
779  * fields.
780  */
781  switch (style)
782  {
783  /* SQL Standard interval format */
785  {
786  bool has_negative = year < 0 || mon < 0 ||
787  mday < 0 || hour < 0 ||
788  min < 0 || sec < 0 || fsec < 0;
789  bool has_positive = year > 0 || mon > 0 ||
790  mday > 0 || hour > 0 ||
791  min > 0 || sec > 0 || fsec > 0;
792  bool has_year_month = year != 0 || mon != 0;
793  bool has_day_time = mday != 0 || hour != 0 ||
794  min != 0 || sec != 0 || fsec != 0;
795  bool has_day = mday != 0;
796  bool sql_standard_value = !(has_negative && has_positive) &&
797  !(has_year_month && has_day_time);
798 
799  /*
800  * SQL Standard wants only 1 "<sign>" preceding the whole
801  * interval ... but can't do that if mixed signs.
802  */
803  if (has_negative && sql_standard_value)
804  {
805  *cp++ = '-';
806  year = -year;
807  mon = -mon;
808  mday = -mday;
809  hour = -hour;
810  min = -min;
811  sec = -sec;
812  fsec = -fsec;
813  }
814 
815  if (!has_negative && !has_positive)
816  {
817  sprintf(cp, "0");
818  }
819  else if (!sql_standard_value)
820  {
821  /*
822  * For non sql-standard interval values, force outputting
823  * the signs to avoid ambiguities with intervals with
824  * mixed sign components.
825  */
826  char year_sign = (year < 0 || mon < 0) ? '-' : '+';
827  char day_sign = (mday < 0) ? '-' : '+';
828  char sec_sign = (hour < 0 || min < 0 ||
829  sec < 0 || fsec < 0) ? '-' : '+';
830 
831  sprintf(cp, "%c%d-%d %c%d %c%d:%02d:",
832  year_sign, abs(year), abs(mon),
833  day_sign, abs(mday),
834  sec_sign, abs(hour), abs(min));
835  cp += strlen(cp);
836  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
837  }
838  else if (has_year_month)
839  {
840  sprintf(cp, "%d-%d", year, mon);
841  }
842  else if (has_day)
843  {
844  sprintf(cp, "%d %d:%02d:", mday, hour, min);
845  cp += strlen(cp);
846  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
847  }
848  else
849  {
850  sprintf(cp, "%d:%02d:", hour, min);
851  cp += strlen(cp);
852  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
853  }
854  }
855  break;
856 
857  /* ISO 8601 "time-intervals by duration only" */
858  case INTSTYLE_ISO_8601:
859  /* special-case zero to avoid printing nothing */
860  if (year == 0 && mon == 0 && mday == 0 &&
861  hour == 0 && min == 0 && sec == 0 && fsec == 0)
862  {
863  sprintf(cp, "PT0S");
864  break;
865  }
866  *cp++ = 'P';
867  cp = AddISO8601IntPart(cp, year, 'Y');
868  cp = AddISO8601IntPart(cp, mon, 'M');
869  cp = AddISO8601IntPart(cp, mday, 'D');
870  if (hour != 0 || min != 0 || sec != 0 || fsec != 0)
871  *cp++ = 'T';
872  cp = AddISO8601IntPart(cp, hour, 'H');
873  cp = AddISO8601IntPart(cp, min, 'M');
874  if (sec != 0 || fsec != 0)
875  {
876  if (sec < 0 || fsec < 0)
877  *cp++ = '-';
878  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, false);
879  cp += strlen(cp);
880  *cp++ = 'S';
881  *cp = '\0';
882  }
883  break;
884 
885  /* Compatible with postgresql < 8.4 when DateStyle = 'iso' */
886  case INTSTYLE_POSTGRES:
887  cp = AddPostgresIntPart(cp, year, "year", &is_zero, &is_before);
888  cp = AddPostgresIntPart(cp, mon, "mon", &is_zero, &is_before);
889  cp = AddPostgresIntPart(cp, mday, "day", &is_zero, &is_before);
890  if (is_zero || hour != 0 || min != 0 || sec != 0 || fsec != 0)
891  {
892  bool minus = (hour < 0 || min < 0 || sec < 0 || fsec < 0);
893 
894  sprintf(cp, "%s%s%02d:%02d:",
895  is_zero ? "" : " ",
896  (minus ? "-" : (is_before ? "+" : "")),
897  abs(hour), abs(min));
898  cp += strlen(cp);
899  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
900  }
901  break;
902 
903  /* Compatible with postgresql < 8.4 when DateStyle != 'iso' */
905  default:
906  strcpy(cp, "@");
907  cp++;
908  cp = AddVerboseIntPart(cp, year, "year", &is_zero, &is_before);
909  cp = AddVerboseIntPart(cp, mon, "mon", &is_zero, &is_before);
910  cp = AddVerboseIntPart(cp, mday, "day", &is_zero, &is_before);
911  cp = AddVerboseIntPart(cp, hour, "hour", &is_zero, &is_before);
912  cp = AddVerboseIntPart(cp, min, "min", &is_zero, &is_before);
913  if (sec != 0 || fsec != 0)
914  {
915  *cp++ = ' ';
916  if (sec < 0 || (sec == 0 && fsec < 0))
917  {
918  if (is_zero)
919  is_before = true;
920  else if (!is_before)
921  *cp++ = '-';
922  }
923  else if (is_before)
924  *cp++ = '-';
925  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, false);
926  cp += strlen(cp);
927  sprintf(cp, " sec%s",
928  (abs(sec) != 1 || fsec != 0) ? "s" : "");
929  is_zero = false;
930  }
931  /* identically zero? then put in a unitless zero... */
932  if (is_zero)
933  strcat(cp, " 0");
934  if (is_before)
935  strcat(cp, " ago");
936  break;
937  }
938 }
#define INTSTYLE_POSTGRES_VERBOSE
Definition: miscadmin.h:235
static void AppendSeconds(char *cp, int sec, fsec_t fsec, int precision, bool fillzeros)
Definition: interval.c:737
int tm_hour
Definition: pgtime.h:29
static struct pg_tm tm
Definition: localtime.c:108
#define sprintf
Definition: port.h:194
#define MAX_INTERVAL_PRECISION
Definition: timestamp.h:54
static char * AddISO8601IntPart(char *cp, int value, char units)
Definition: interval.c:727
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define INTSTYLE_ISO_8601
Definition: miscadmin.h:237
static char * AddPostgresIntPart(char *cp, int value, const char *units, bool *is_zero, bool *is_before)
Definition: interval.c:704
#define INTSTYLE_SQL_STANDARD
Definition: miscadmin.h:236
int tm_year
Definition: pgtime.h:32
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28
static char * AddVerboseIntPart(char *cp, int value, const char *units, bool *is_zero, bool *is_before)
Definition: interval.c:684
#define INTSTYLE_POSTGRES
Definition: miscadmin.h:234

◆ GetCurrentDateTime()

void GetCurrentDateTime ( struct tm )

Definition at line 1058 of file dt_common.c.

References abstime2tm().

Referenced by DecodeDateTime().

1059 {
1060  int tz;
1061 
1062  abstime2tm(time(NULL), &tz, tm, NULL);
1063 }
static struct pg_tm tm
Definition: localtime.c:108
static void abstime2tm(AbsoluteTime _time, int *tzp, struct tm *tm, char **tzn)
Definition: dt_common.c:973

◆ GetEpochTime()

int GetEpochTime ( struct tm )

Definition at line 950 of file dt_common.c.

References epoch.

951 {
952  struct tm *t0;
953  time_t epoch = 0;
954 
955  t0 = gmtime(&epoch);
956 
957  if (t0)
958  {
959  tm->tm_year = t0->tm_year + 1900;
960  tm->tm_mon = t0->tm_mon + 1;
961  tm->tm_mday = t0->tm_mday;
962  tm->tm_hour = t0->tm_hour;
963  tm->tm_min = t0->tm_min;
964  tm->tm_sec = t0->tm_sec;
965 
966  return 0;
967  }
968 
969  return -1;
970 } /* GetEpochTime() */
int tm_hour
Definition: pgtime.h:29
static struct pg_tm tm
Definition: localtime.c:108
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
int tm_year
Definition: pgtime.h:32
static const unsigned __int64 epoch
Definition: gettimeofday.c:34
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28

◆ j2date()

void j2date ( int  ,
int *  ,
int *  ,
int *   
)

Definition at line 295 of file datetime.c.

References MONTHS_PER_YEAR.

Referenced by date2timestamptz(), date_out(), DecodeDateTime(), DecodeNumber(), DecodeTimeOnly(), do_to_timestamp(), isoweek2date(), isoweekdate2date(), JsonEncodeDateTime(), map_sql_value_to_xml_value(), PGTYPESdate_fmt_asc(), PGTYPESdate_julmdy(), PGTYPESdate_to_asc(), timestamp2tm(), timestamp_pl_interval(), timestamptz_pl_interval(), and ValidateDate().

296 {
297  unsigned int julian;
298  unsigned int quad;
299  unsigned int extra;
300  int y;
301 
302  julian = jd;
303  julian += 32044;
304  quad = julian / 146097;
305  extra = (julian - quad * 146097) * 4 + 3;
306  julian += 60 + quad * 3 + extra / 146097;
307  quad = julian / 1461;
308  julian -= quad * 1461;
309  y = julian * 4 / 1461;
310  julian = ((y != 0) ? ((julian + 305) % 365) : ((julian + 306) % 366))
311  + 123;
312  y += quad * 4;
313  *year = y - 4800;
314  quad = julian * 2141 / 65536;
315  *day = julian - 7834 * quad / 256;
316  *month = (quad + 10) % MONTHS_PER_YEAR + 1;
317 
318  return;
319 } /* j2date() */
#define MONTHS_PER_YEAR
Definition: timestamp.h:69

◆ ParseDateTime()

int ParseDateTime ( char *  ,
char *  ,
char **  ,
int *  ,
int *  ,
char **   
)

Definition at line 1598 of file dt_common.c.

References DTK_DATE, DTK_NUMBER, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TZ, MAXDATEFIELDS, and pg_tolower().

1600 {
1601  int nf = 0;
1602  char *lp = lowstr;
1603 
1604  *endstr = timestr;
1605  /* outer loop through fields */
1606  while (*(*endstr) != '\0')
1607  {
1608  /* Record start of current field */
1609  if (nf >= MAXDATEFIELDS)
1610  return -1;
1611  field[nf] = lp;
1612 
1613  /* leading digit? then date or time */
1614  if (isdigit((unsigned char) *(*endstr)))
1615  {
1616  *lp++ = *(*endstr)++;
1617  while (isdigit((unsigned char) *(*endstr)))
1618  *lp++ = *(*endstr)++;
1619 
1620  /* time field? */
1621  if (*(*endstr) == ':')
1622  {
1623  ftype[nf] = DTK_TIME;
1624  *lp++ = *(*endstr)++;
1625  while (isdigit((unsigned char) *(*endstr)) ||
1626  (*(*endstr) == ':') || (*(*endstr) == '.'))
1627  *lp++ = *(*endstr)++;
1628  }
1629  /* date field? allow embedded text month */
1630  else if (*(*endstr) == '-' || *(*endstr) == '/' || *(*endstr) == '.')
1631  {
1632  /* save delimiting character to use later */
1633  char *dp = (*endstr);
1634 
1635  *lp++ = *(*endstr)++;
1636  /* second field is all digits? then no embedded text month */
1637  if (isdigit((unsigned char) *(*endstr)))
1638  {
1639  ftype[nf] = (*dp == '.') ? DTK_NUMBER : DTK_DATE;
1640  while (isdigit((unsigned char) *(*endstr)))
1641  *lp++ = *(*endstr)++;
1642 
1643  /*
1644  * insist that the delimiters match to get a three-field
1645  * date.
1646  */
1647  if (*(*endstr) == *dp)
1648  {
1649  ftype[nf] = DTK_DATE;
1650  *lp++ = *(*endstr)++;
1651  while (isdigit((unsigned char) *(*endstr)) || (*(*endstr) == *dp))
1652  *lp++ = *(*endstr)++;
1653  }
1654  }
1655  else
1656  {
1657  ftype[nf] = DTK_DATE;
1658  while (isalnum((unsigned char) *(*endstr)) || (*(*endstr) == *dp))
1659  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1660  }
1661  }
1662 
1663  /*
1664  * otherwise, number only and will determine year, month, day, or
1665  * concatenated fields later...
1666  */
1667  else
1668  ftype[nf] = DTK_NUMBER;
1669  }
1670  /* Leading decimal point? Then fractional seconds... */
1671  else if (*(*endstr) == '.')
1672  {
1673  *lp++ = *(*endstr)++;
1674  while (isdigit((unsigned char) *(*endstr)))
1675  *lp++ = *(*endstr)++;
1676 
1677  ftype[nf] = DTK_NUMBER;
1678  }
1679 
1680  /*
1681  * text? then date string, month, day of week, special, or timezone
1682  */
1683  else if (isalpha((unsigned char) *(*endstr)))
1684  {
1685  ftype[nf] = DTK_STRING;
1686  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1687  while (isalpha((unsigned char) *(*endstr)))
1688  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1689 
1690  /*
1691  * Full date string with leading text month? Could also be a POSIX
1692  * time zone...
1693  */
1694  if (*(*endstr) == '-' || *(*endstr) == '/' || *(*endstr) == '.')
1695  {
1696  char *dp = (*endstr);
1697 
1698  ftype[nf] = DTK_DATE;
1699  *lp++ = *(*endstr)++;
1700  while (isdigit((unsigned char) *(*endstr)) || *(*endstr) == *dp)
1701  *lp++ = *(*endstr)++;
1702  }
1703  }
1704  /* skip leading spaces */
1705  else if (isspace((unsigned char) *(*endstr)))
1706  {
1707  (*endstr)++;
1708  continue;
1709  }
1710  /* sign? then special or numeric timezone */
1711  else if (*(*endstr) == '+' || *(*endstr) == '-')
1712  {
1713  *lp++ = *(*endstr)++;
1714  /* soak up leading whitespace */
1715  while (isspace((unsigned char) *(*endstr)))
1716  (*endstr)++;
1717  /* numeric timezone? */
1718  if (isdigit((unsigned char) *(*endstr)))
1719  {
1720  ftype[nf] = DTK_TZ;
1721  *lp++ = *(*endstr)++;
1722  while (isdigit((unsigned char) *(*endstr)) ||
1723  (*(*endstr) == ':') || (*(*endstr) == '.'))
1724  *lp++ = *(*endstr)++;
1725  }
1726  /* special? */
1727  else if (isalpha((unsigned char) *(*endstr)))
1728  {
1729  ftype[nf] = DTK_SPECIAL;
1730  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1731  while (isalpha((unsigned char) *(*endstr)))
1732  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1733  }
1734  /* otherwise something wrong... */
1735  else
1736  return -1;
1737  }
1738  /* ignore punctuation but use as delimiter */
1739  else if (ispunct((unsigned char) *(*endstr)))
1740  {
1741  (*endstr)++;
1742  continue;
1743 
1744  }
1745  /* otherwise, something is not right... */
1746  else
1747  return -1;
1748 
1749  /* force in a delimiter after each field */
1750  *lp++ = '\0';
1751  nf++;
1752  }
1753 
1754  *numfields = nf;
1755 
1756  return 0;
1757 } /* ParseDateTime() */
unsigned char pg_tolower(unsigned char ch)
Definition: pgstrcasecmp.c:122
#define DTK_TZ
Definition: datetime.h:147
#define DTK_NUMBER
Definition: datetime.h:142
#define DTK_TIME
Definition: datetime.h:146
#define MAXDATEFIELDS
Definition: datetime.h:203
#define DTK_STRING
Definition: datetime.h:143
#define DTK_DATE
Definition: datetime.h:145
#define DTK_SPECIAL
Definition: datetime.h:150

◆ PGTYPEStimestamp_defmt_scan()

int PGTYPEStimestamp_defmt_scan ( char **  str,
char *  fmt,
timestamp d,
int *  year,
int *  month,
int *  day,
int *  hour,
int *  minute,
int *  second,
int *  tz 
)

Definition at line 2520 of file dt_common.c.

References day_tab, days, DecodeTimezone(), DTZ, free, isleap, un_fmt_comb::luint_val, months, MONTHS_PER_YEAR, pg_strcasecmp(), pgtypes_alloc(), pgtypes_date_months, pgtypes_date_weekdays_short, pgtypes_defmt_scan(), PGTYPES_TYPE_STRING_MALLOCED, PGTYPES_TYPE_UINT, PGTYPES_TYPE_UINT_LONG, generate_unaccent_rules::str, un_fmt_comb::str_val, szdatetktbl, tm, tm2timestamp(), generate_unaccent_rules::type, TZ, un_fmt_comb::uint_val, and datetkn::value.

Referenced by PGTYPEStimestamp_defmt_asc().

2524 {
2525  union un_fmt_comb scan_val;
2526  int scan_type;
2527 
2528  char *pstr,
2529  *pfmt,
2530  *tmp;
2531  int err = 1;
2532  unsigned int j;
2533  struct tm tm;
2534 
2535  pfmt = fmt;
2536  pstr = *str;
2537 
2538  while (*pfmt)
2539  {
2540  err = 0;
2541  while (*pfmt == ' ')
2542  pfmt++;
2543  while (*pstr == ' ')
2544  pstr++;
2545  if (*pfmt != '%')
2546  {
2547  if (*pfmt == *pstr)
2548  {
2549  pfmt++;
2550  pstr++;
2551  }
2552  else
2553  {
2554  /* Error: no match */
2555  err = 1;
2556  return err;
2557  }
2558  continue;
2559  }
2560  /* here *pfmt equals '%' */
2561  pfmt++;
2562  switch (*pfmt)
2563  {
2564  case 'a':
2565  pfmt++;
2566 
2567  /*
2568  * we parse the day and see if it is a week day but we do not
2569  * check if the week day really matches the date
2570  */
2571  err = 1;
2572  j = 0;
2573  while (pgtypes_date_weekdays_short[j])
2574  {
2575  if (strncmp(pgtypes_date_weekdays_short[j], pstr,
2576  strlen(pgtypes_date_weekdays_short[j])) == 0)
2577  {
2578  /* found it */
2579  err = 0;
2580  pstr += strlen(pgtypes_date_weekdays_short[j]);
2581  break;
2582  }
2583  j++;
2584  }
2585  break;
2586  case 'A':
2587  /* see note above */
2588  pfmt++;
2589  err = 1;
2590  j = 0;
2591  while (days[j])
2592  {
2593  if (strncmp(days[j], pstr, strlen(days[j])) == 0)
2594  {
2595  /* found it */
2596  err = 0;
2597  pstr += strlen(days[j]);
2598  break;
2599  }
2600  j++;
2601  }
2602  break;
2603  case 'b':
2604  case 'h':
2605  pfmt++;
2606  err = 1;
2607  j = 0;
2608  while (months[j])
2609  {
2610  if (strncmp(months[j], pstr, strlen(months[j])) == 0)
2611  {
2612  /* found it */
2613  err = 0;
2614  pstr += strlen(months[j]);
2615  *month = j + 1;
2616  break;
2617  }
2618  j++;
2619  }
2620  break;
2621  case 'B':
2622  /* see note above */
2623  pfmt++;
2624  err = 1;
2625  j = 0;
2626  while (pgtypes_date_months[j])
2627  {
2628  if (strncmp(pgtypes_date_months[j], pstr, strlen(pgtypes_date_months[j])) == 0)
2629  {
2630  /* found it */
2631  err = 0;
2632  pstr += strlen(pgtypes_date_months[j]);
2633  *month = j + 1;
2634  break;
2635  }
2636  j++;
2637  }
2638  break;
2639  case 'c':
2640  /* XXX */
2641  break;
2642  case 'C':
2643  pfmt++;
2644  scan_type = PGTYPES_TYPE_UINT;
2645  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2646  *year = scan_val.uint_val * 100;
2647  break;
2648  case 'd':
2649  case 'e':
2650  pfmt++;
2651  scan_type = PGTYPES_TYPE_UINT;
2652  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2653  *day = scan_val.uint_val;
2654  break;
2655  case 'D':
2656 
2657  /*
2658  * we have to concatenate the strings in order to be able to
2659  * find the end of the substitution
2660  */
2661  pfmt++;
2662  tmp = pgtypes_alloc(strlen("%m/%d/%y") + strlen(pstr) + 1);
2663  strcpy(tmp, "%m/%d/%y");
2664  strcat(tmp, pfmt);
2665  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2666  free(tmp);
2667  return err;
2668  case 'm':
2669  pfmt++;
2670  scan_type = PGTYPES_TYPE_UINT;
2671  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2672  *month = scan_val.uint_val;
2673  break;
2674  case 'y':
2675  case 'g': /* XXX difference to y (ISO) */
2676  pfmt++;
2677  scan_type = PGTYPES_TYPE_UINT;
2678  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2679  if (*year < 0)
2680  {
2681  /* not yet set */
2682  *year = scan_val.uint_val;
2683  }
2684  else
2685  *year += scan_val.uint_val;
2686  if (*year < 100)
2687  *year += 1900;
2688  break;
2689  case 'G':
2690  /* XXX difference to %V (ISO) */
2691  pfmt++;
2692  scan_type = PGTYPES_TYPE_UINT;
2693  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2694  *year = scan_val.uint_val;
2695  break;
2696  case 'H':
2697  case 'I':
2698  case 'k':
2699  case 'l':
2700  pfmt++;
2701  scan_type = PGTYPES_TYPE_UINT;
2702  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2703  *hour += scan_val.uint_val;
2704  break;
2705  case 'j':
2706  pfmt++;
2707  scan_type = PGTYPES_TYPE_UINT;
2708  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2709 
2710  /*
2711  * XXX what should we do with that? We could say that it's
2712  * sufficient if we have the year and the day within the year
2713  * to get at least a specific day.
2714  */
2715  break;
2716  case 'M':
2717  pfmt++;
2718  scan_type = PGTYPES_TYPE_UINT;
2719  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2720  *minute = scan_val.uint_val;
2721  break;
2722  case 'n':
2723  pfmt++;
2724  if (*pstr == '\n')
2725  pstr++;
2726  else
2727  err = 1;
2728  break;
2729  case 'p':
2730  err = 1;
2731  pfmt++;
2732  if (strncmp(pstr, "am", 2) == 0)
2733  {
2734  *hour += 0;
2735  err = 0;
2736  pstr += 2;
2737  }
2738  if (strncmp(pstr, "a.m.", 4) == 0)
2739  {
2740  *hour += 0;
2741  err = 0;
2742  pstr += 4;
2743  }
2744  if (strncmp(pstr, "pm", 2) == 0)
2745  {
2746  *hour += 12;
2747  err = 0;
2748  pstr += 2;
2749  }
2750  if (strncmp(pstr, "p.m.", 4) == 0)
2751  {
2752  *hour += 12;
2753  err = 0;
2754  pstr += 4;
2755  }
2756  break;
2757  case 'P':
2758  err = 1;
2759  pfmt++;
2760  if (strncmp(pstr, "AM", 2) == 0)
2761  {
2762  *hour += 0;
2763  err = 0;
2764  pstr += 2;
2765  }
2766  if (strncmp(pstr, "A.M.", 4) == 0)
2767  {
2768  *hour += 0;
2769  err = 0;
2770  pstr += 4;
2771  }
2772  if (strncmp(pstr, "PM", 2) == 0)
2773  {
2774  *hour += 12;
2775  err = 0;
2776  pstr += 2;
2777  }
2778  if (strncmp(pstr, "P.M.", 4) == 0)
2779  {
2780  *hour += 12;
2781  err = 0;
2782  pstr += 4;
2783  }
2784  break;
2785  case 'r':
2786  pfmt++;
2787  tmp = pgtypes_alloc(strlen("%I:%M:%S %p") + strlen(pstr) + 1);
2788  strcpy(tmp, "%I:%M:%S %p");
2789  strcat(tmp, pfmt);
2790  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2791  free(tmp);
2792  return err;
2793  case 'R':
2794  pfmt++;
2795  tmp = pgtypes_alloc(strlen("%H:%M") + strlen(pstr) + 1);
2796  strcpy(tmp, "%H:%M");
2797  strcat(tmp, pfmt);
2798  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2799  free(tmp);
2800  return err;
2801  case 's':
2802  pfmt++;
2803  scan_type = PGTYPES_TYPE_UINT_LONG;
2804  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2805  /* number of seconds in scan_val.luint_val */
2806  {
2807  struct tm *tms;
2808  time_t et = (time_t) scan_val.luint_val;
2809 
2810  tms = gmtime(&et);
2811 
2812  if (tms)
2813  {
2814  *year = tms->tm_year + 1900;
2815  *month = tms->tm_mon + 1;
2816  *day = tms->tm_mday;
2817  *hour = tms->tm_hour;
2818  *minute = tms->tm_min;
2819  *second = tms->tm_sec;
2820  }
2821  else
2822  err = 1;
2823  }
2824  break;
2825  case 'S':
2826  pfmt++;
2827  scan_type = PGTYPES_TYPE_UINT;
2828  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2829  *second = scan_val.uint_val;
2830  break;
2831  case 't':
2832  pfmt++;
2833  if (*pstr == '\t')
2834  pstr++;
2835  else
2836  err = 1;
2837  break;
2838  case 'T':
2839  pfmt++;
2840  tmp = pgtypes_alloc(strlen("%H:%M:%S") + strlen(pstr) + 1);
2841  strcpy(tmp, "%H:%M:%S");
2842  strcat(tmp, pfmt);
2843  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2844  free(tmp);
2845  return err;
2846  case 'u':
2847  pfmt++;
2848  scan_type = PGTYPES_TYPE_UINT;
2849  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2850  if (scan_val.uint_val < 1 || scan_val.uint_val > 7)
2851  err = 1;
2852  break;
2853  case 'U':
2854  pfmt++;
2855  scan_type = PGTYPES_TYPE_UINT;
2856  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2857  if (scan_val.uint_val > 53)
2858  err = 1;
2859  break;
2860  case 'V':
2861  pfmt++;
2862  scan_type = PGTYPES_TYPE_UINT;
2863  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2864  if (scan_val.uint_val < 1 || scan_val.uint_val > 53)
2865  err = 1;
2866  break;
2867  case 'w':
2868  pfmt++;
2869  scan_type = PGTYPES_TYPE_UINT;
2870  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2871  if (scan_val.uint_val > 6)
2872  err = 1;
2873  break;
2874  case 'W':
2875  pfmt++;
2876  scan_type = PGTYPES_TYPE_UINT;
2877  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2878  if (scan_val.uint_val > 53)
2879  err = 1;
2880  break;
2881  case 'x':
2882  case 'X':
2883  /* XXX */
2884  break;
2885  case 'Y':
2886  pfmt++;
2887  scan_type = PGTYPES_TYPE_UINT;
2888  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2889  *year = scan_val.uint_val;
2890  break;
2891  case 'z':
2892  pfmt++;
2893  scan_type = PGTYPES_TYPE_STRING_MALLOCED;
2894  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2895  if (!err)
2896  {
2897  err = DecodeTimezone(scan_val.str_val, tz);
2898  free(scan_val.str_val);
2899  }
2900  break;
2901  case 'Z':
2902  pfmt++;
2903  scan_type = PGTYPES_TYPE_STRING_MALLOCED;
2904  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2905  if (!err)
2906  {
2907  /*
2908  * XXX use DecodeSpecial instead? Do we need strcasecmp
2909  * here?
2910  */
2911  err = 1;
2912  for (j = 0; j < szdatetktbl; j++)
2913  {
2914  if ((datetktbl[j].type == TZ || datetktbl[j].type == DTZ) &&
2915  pg_strcasecmp(datetktbl[j].token,
2916  scan_val.str_val) == 0)
2917  {
2918  *tz = -datetktbl[j].value;
2919  err = 0;
2920  break;
2921  }
2922  }
2923  free(scan_val.str_val);
2924  }
2925  break;
2926  case '+':
2927  /* XXX */
2928  break;
2929  case '%':
2930  pfmt++;
2931  if (*pstr == '%')
2932  pstr++;
2933  else
2934  err = 1;
2935  break;
2936  default:
2937  err = 1;
2938  }
2939  }
2940  if (!err)
2941  {
2942  if (*second < 0)
2943  *second = 0;
2944  if (*minute < 0)
2945  *minute = 0;
2946  if (*hour < 0)
2947  *hour = 0;
2948  if (*day < 0)
2949  {
2950  err = 1;
2951  *day = 1;
2952  }
2953  if (*month < 0)
2954  {
2955  err = 1;
2956  *month = 1;
2957  }
2958  if (*year < 0)
2959  {
2960  err = 1;
2961  *year = 1970;
2962  }
2963 
2964  if (*second > 59)
2965  {
2966  err = 1;
2967  *second = 0;
2968  }
2969  if (*minute > 59)
2970  {
2971  err = 1;
2972  *minute = 0;
2973  }
2974  if (*hour > 24 || /* test for > 24:00:00 */
2975  (*hour == 24 && (*minute > 0 || *second > 0)))
2976  {
2977  err = 1;
2978  *hour = 0;
2979  }
2980  if (*month > MONTHS_PER_YEAR)
2981  {
2982  err = 1;
2983  *month = 1;
2984  }
2985  if (*day > day_tab[isleap(*year)][*month - 1])
2986  {
2987  *day = day_tab[isleap(*year)][*month - 1];
2988  err = 1;
2989  }
2990 
2991  tm.tm_sec = *second;
2992  tm.tm_min = *minute;
2993  tm.tm_hour = *hour;
2994  tm.tm_mday = *day;
2995  tm.tm_mon = *month;
2996  tm.tm_year = *year;
2997 
2998  tm2timestamp(&tm, 0, tz, d);
2999  }
3000  return err;
3001 }
static const datetkn datetktbl[]
Definition: dt_common.c:20
static const unsigned int szdatetktbl
Definition: dt_common.c:486
char * days[]
Definition: dt_common.c:495
int tm_hour
Definition: pgtime.h:29
#define isleap(y)
Definition: datetime.h:271
#define PGTYPES_TYPE_UINT_LONG
#define TZ
Definition: datetime.h:96
int32 value
Definition: datetime.h:212
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
static int DecodeTimezone(char *str, int *tzp)
Definition: dt_common.c:1500
static struct pg_tm tm
Definition: localtime.c:108
#define MONTHS_PER_YEAR
Definition: timestamp.h:69
#define PGTYPES_TYPE_UINT
char * months[]
Definition: dt_common.c:493
char * pgtypes_alloc(long size)
Definition: common.c:10
int tm_mday
Definition: pgtime.h:30
int PGTYPEStimestamp_defmt_scan(char **str, char *fmt, timestamp *d, int *year, int *month, int *day, int *hour, int *minute, int *second, int *tz)
Definition: dt_common.c:2520
int tm_mon
Definition: pgtime.h:31
char * pgtypes_date_weekdays_short[]
Definition: dt_common.c:497
#define PGTYPES_TYPE_STRING_MALLOCED
const int day_tab[2][13]
Definition: dt_common.c:14
#define free(a)
Definition: header.h:65
int tm2timestamp(struct pg_tm *tm, fsec_t fsec, int *tzp, Timestamp *result)
Definition: timestamp.c:1873
#define DTZ
Definition: datetime.h:97
int tm_year
Definition: pgtime.h:32
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28
char * pgtypes_date_months[]
Definition: dt_common.c:499
static int pgtypes_defmt_scan(union un_fmt_comb *scan_val, int scan_type, char **pstr, char *pfmt)
Definition: dt_common.c:2458

◆ tm2timestamp()

int tm2timestamp ( struct tm ,
fsec_t  ,
int *  ,
timestamp  
)

Definition at line 41 of file timestamp.c.

References date2j(), dt2local(), IS_VALID_JULIAN, IS_VALID_TIMESTAMP, time2t(), and USECS_PER_DAY.

42 {
43  int dDate;
44  int64 time;
45 
46  /* Prevent overflow in Julian-day routines */
48  return -1;
49 
50  dDate = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - date2j(2000, 1, 1);
51  time = time2t(tm->tm_hour, tm->tm_min, tm->tm_sec, fsec);
52  *result = (dDate * USECS_PER_DAY) + time;
53  /* check for major overflow */
54  if ((*result - time) / USECS_PER_DAY != dDate)
55  return -1;
56  /* check for just-barely overflow (okay except time-of-day wraps) */
57  /* caution: we want to allow 1999-12-31 24:00:00 */
58  if ((*result < 0 && dDate > 0) ||
59  (*result > 0 && dDate < -1))
60  return -1;
61  if (tzp != NULL)
62  *result = dt2local(*result, -(*tzp));
63 
64  /* final range check catches just-out-of-range timestamps */
65  if (!IS_VALID_TIMESTAMP(*result))
66  return -1;
67 
68  return 0;
69 } /* tm2timestamp() */
static int64 time2t(const int hour, const int min, const int sec, const fsec_t fsec)
Definition: timestamp.c:21
int tm_hour
Definition: pgtime.h:29
static timestamp dt2local(timestamp dt, int tz)
Definition: timestamp.c:27
static struct pg_tm tm
Definition: localtime.c:108
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define IS_VALID_JULIAN(y, m, d)
Definition: timestamp.h:155
#define USECS_PER_DAY
Definition: timestamp.h:91
int date2j(int y, int m, int d)
Definition: datetime.c:270
#define IS_VALID_TIMESTAMP(t)
Definition: timestamp.h:195
int tm_year
Definition: pgtime.h:32
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28

◆ TrimTrailingZeros()

void TrimTrailingZeros ( char *  )

Definition at line 724 of file dt_common.c.

Referenced by AppendSeconds(), and EncodeDateTime().

725 {
726  int len = strlen(str);
727 
728  /* chop off trailing zeros... but leave at least 2 fractional digits */
729  while (*(str + len - 1) == '0' && *(str + len - 3) != '.')
730  {
731  len--;
732  *(str + len) = '\0';
733  }
734 }

Variable Documentation

◆ day_tab

◆ days

◆ months

◆ pgtypes_date_months

char* pgtypes_date_months[]

◆ pgtypes_date_weekdays_short

char* pgtypes_date_weekdays_short[]